FPUS55 KRIW 181649 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 1047 AM MDT Mon May 18 2026 WYZ020-182200- Natrona County Lower Elevations- Including the city of Casper 1047 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Snow showers. Blowing snow this morning. Patchy blowing snow this afternoon. Snow may be heavy at times this morning with visibility one quarter mile or less at times. Snow accumulation of 2 to 9 inches. Breezy, cooler with highs in the mid 30s. North winds 20 to 25 mph. Gusts up to 40 mph this morning. Chance of snow 90 percent. .TONIGHT...Mostly cloudy. A chance of snow and rain showers in the evening. Patchy fog in the evening. Lows in the mid 20s. North winds around 10 mph in the evening. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 40s. Southwest winds around 10 mph. .TUESDAY NIGHT...Mostly clear. Lows in the mid 20s. Southwest winds around 10 mph with gusts up to 20 mph. .WEDNESDAY...Mostly sunny. Highs in the upper 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s. .THURSDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 30s. Chance of rain 30 percent. .FRIDAY...Partly cloudy. A chance of rain showers in the morning, then a slight chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SUNDAY...Mostly sunny and breezy. Highs in the mid 70s. $$ WYZ017-182200- Wind River Basin- Including the cities of Riverton and Shoshoni 1047 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Areas of blowing snow this morning. Snow showers this morning, then snow showers with a chance of rain showers this afternoon. Snow may be heavy at times this morning with visibility one quarter mile or less at times. Snow accumulation up to 9 inches. Windy with highs in the upper 30s. North winds 20 to 30 mph with gusts up to 45 mph. Chance of precipitation 90 percent. .TONIGHT...Mostly cloudy with a chance of rain and snow showers in the evening, then partly cloudy after midnight. Lows in the mid 20s. Northeast winds around 10 mph with gusts up to 25 mph in the evening. Chance of precipitation 30 percent. .TUESDAY...Mostly sunny. Highs in the lower 50s. South winds 10 to 15 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows around 30. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny. Highs in the lower 60s. South winds 10 to 15 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .THURSDAY...Partly cloudy. A chance of rain showers in the morning, then a slight chance of rain showers and thunderstorms in the afternoon. Highs around 60. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows in the mid 30s. .FRIDAY...Partly cloudy. A slight chance of. Highs in the mid 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SUNDAY...Mostly sunny. Highs in the upper 70s. $$ WYZ018-182200- Lander Foothills- Including the city of Lander 1047 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Areas of blowing snow this morning. Snow showers this morning, then snow showers with a chance of rain showers this afternoon. Snow may be heavy at times this morning. Snow accumulation of 3 to 8 inches. Breezy with highs in the mid 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 90 percent. .TONIGHT...Patchy fog in the evening. Mostly cloudy with a chance of snow and rain showers in the evening, then partly cloudy after midnight. Lows in the lower 20s. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 40s. Southeast winds around 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny. Highs around 60. South winds around 10 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 30s. .THURSDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a slight chance of rain showers and thunderstorms in the evening, then partly cloudy with a chance of rain showers after midnight. Lows in the mid 30s. Chance of rain 30 percent. .FRIDAY...Partly cloudy. A slight chance of. Highs in the mid 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SUNDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ028-182200- Rock Springs and Green River- Including the cities of Rock Springs and Green River 1047 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Cloudy. Areas of blowing snow this morning. Snow showers this morning, then snow showers likely with a slight chance of thunderstorms this afternoon with visibility one quarter mile or less at times. Snow accumulation of 1 to 6 inches. Windy with highs in the mid 30s. Northeast winds 20 to 30 mph with gusts up to 50 mph, diminishing to 15 to 20 mph with gusts up to 30 mph this afternoon. Chance of snow 90 percent. .TONIGHT...Mostly cloudy. Lows in the lower 20s. Southeast winds around 10 mph in the evening. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 40s. .TUESDAY NIGHT...Mostly clear. Lows in the lower 20s. .WEDNESDAY...Mostly sunny. Highs in the upper 50s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 30s. .THURSDAY...Partly cloudy. A slight chance of rain showers and thunderstorms in the afternoon. Highs around 60. Chance of rain 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 30s. .FRIDAY...Partly cloudy. A slight chance of. Highs in the mid 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Partly cloudy. Lows around 40. .SUNDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ013-182200- Jackson Hole- Including the city of Jackson 1047 AM MDT Mon May 18 2026 .TODAY...Mostly cloudy with a chance of snow showers. A slight chance of rain showers and thunderstorms this afternoon. Breezy with highs in the mid 40s. North winds 15 to 20 mph. Gusts up to 35 mph this morning. Chance of precipitation 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 20s. North winds around 10 mph with gusts up to 20 mph in the evening. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 50s. West winds around 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. Southwest winds around 10 mph in the evening. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy. A slight chance of rain showers and thunderstorms in the evening, then a chance of rain and snow showers after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a slight chance of rain and snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 30s. .FRIDAY...Partly cloudy. A slight chance of rain showers, thunderstorms and snow showers in the morning, then a chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of precipitation 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. .SATURDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 70. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SUNDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. $$ WYZ003-182200- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy. Patchy blowing snow this morning. Snow showers, mainly this morning. Snow accumulation up to 2 inches. Windy with highs in the lower 40s. North winds 25 to 35 mph with gusts up to 50 mph. Chance of snow 80 percent. .TONIGHT...Mostly cloudy with a chance of snow showers in the evening, then mostly clear after midnight. Breezy with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph in the evening. Chance of snow 30 percent. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 50s. South winds around 10 mph, becoming southeast in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. South winds 10 to 15 mph, becoming southwest after midnight. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the lower 60s. Southwest winds around 10 mph, becoming west in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy with rain showers likely with a slight chance of thunderstorms. Lows around 40. Chance of rain 70 percent. .THURSDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of rain showers. A chance of snow showers in the morning, then a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Windy with highs in the mid 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of snow showers after midnight. Lows in the upper 30s. Chance of precipitation 30 percent. .FRIDAY...Partly cloudy. A chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. .SATURDAY NIGHT...Partly cloudy. Lows around 50. .SUNDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the mid 70s. $$ WYZ004-182200- North Bighorn Basin- Including the cities of Basin, Greybull, Lovell, Powell, and Shell 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy. A chance of snow showers with a slight chance of rain showers this morning. Windy with highs around 50. North winds 20 to 30 mph. Gusts up to 50 mph this morning. Chance of precipitation 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Breezy with lows around 30. North winds 15 to 20 mph with gusts up to 30 mph in the evening. .TUESDAY...Mostly sunny. Highs around 60. South winds around 10 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows in the mid 30s. Southeast winds 15 to 20 mph with gusts up to 40 mph. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 70. South winds around 10 mph. .WEDNESDAY NIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Breezy with lows around 40. Chance of rain 30 percent. .THURSDAY...Mostly cloudy with a chance of showers in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Windy with highs around 60. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy. A slight chance of. Lows in the upper 30s. .FRIDAY...Partly cloudy. A slight chance of. Highs around 70. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SUNDAY...Partly cloudy in the morning, then clearing. Highs around 80. $$ WYZ006-182200- Southeast Bighorn Basin- Including the cities of Ten Sleep and Worland 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy with a chance of rain showers. Snow showers. Snow accumulation up to 4 inches. Breezy with highs in the mid 40s. Northwest winds 20 to 25 mph with gusts up to 45 mph. Chance of precipitation 80 percent. .TONIGHT...Mostly cloudy in the evening, then clearing. Breezy with lows around 30. Northwest winds 15 to 20 mph in the evening. .TUESDAY...Mostly sunny. Highs around 60. South winds around 10 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows in the lower 30s. Southeast winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny. Highs in the upper 60s. South winds around 10 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of. Lows around 40. .THURSDAY...Mostly cloudy with a chance of showers in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Breezy with highs around 60. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 30s. .FRIDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SUNDAY...Mostly sunny. Highs around 80. $$ WYZ005-182200- Southwest Bighorn Basin- Including the city of Thermopolis 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy. Patchy blowing snow this morning. Snow showers this morning, then snow showers likely with a chance of rain showers this afternoon. Snow accumulation up to 4 inches. Windy with highs in the mid 40s. North winds 20 to 30 mph with gusts up to 50 mph. Chance of precipitation 80 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows around 30. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. .TUESDAY...Mostly sunny. Highs in the mid 50s. South winds around 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Sunny in the morning, then becoming partly cloudy. Highs in the mid 60s. South winds around 10 mph. .WEDNESDAY NIGHT...Mostly cloudy. A slight chance of. Lows around 40. .THURSDAY...Partly cloudy. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Breezy with highs around 60. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the upper 30s. Chance of rain 20 percent. .FRIDAY...Partly cloudy. A slight chance of. Highs in the mid 60s. .FRIDAY NIGHT...Partly cloudy. Lows around 40. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SUNDAY...Mostly sunny. Highs in the upper 70s. $$ WYZ023-182200- Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy with a chance of snow showers. A chance of rain showers with a slight chance of thunderstorms this afternoon. Highs around 50. North winds around 10 mph. Chance of precipitation 40 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. North winds around 10 mph in the evening. .TUESDAY...Partly cloudy. Highs in the mid 50s. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 60. West winds around 10 mph with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy. Lows in the lower 30s. .THURSDAY...Mostly cloudy with a slight chance of rain showers in the morning, then partly cloudy in the afternoon. Highs around 60. Chance of rain 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 30s. .FRIDAY...Partly cloudy with a slight chance of rain showers and thunderstorms. Highs in the mid 60s. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 70s. .SATURDAY NIGHT...Partly cloudy. Lows around 40. .SUNDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ025-182200- Upper Green River Basin Foothills- Including the city of Pinedale 1047 AM MDT Mon May 18 2026 .TODAY...Snow showers this morning, then snow showers likely with a slight chance of thunderstorms this afternoon. Snow accumulation up to 1 inch. Breezy with highs in the lower 40s. North winds 15 to 20 mph with gusts up to 35 mph, becoming northeast around 10 mph with gusts up to 25 mph this afternoon. Chance of snow 80 percent. .TONIGHT...Mostly cloudy. Snow showers with a slight chance of thunderstorms in the evening, then snow showers likely after midnight. Snow accumulation up to 2 inches. Lows in the mid 20s. Southeast winds around 10 mph in the evening. Chance of snow 80 percent. .TUESDAY...Partly cloudy. Highs around 50. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 20s. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 50s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows around 30. .THURSDAY...Partly cloudy with a slight chance of rain showers. A slight chance of snow showers in the morning, then a slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Chance of precipitation 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 20s. .FRIDAY...Partly cloudy. A chance of rain showers and thunderstorms in the afternoon. Highs around 60. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. .SATURDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .SUNDAY...Mostly sunny. Highs around 70. $$ WYZ026-182200- Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 1047 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Cloudy. Patchy blowing snow this morning. Snow showers this morning, then snow showers likely with a slight chance of thunderstorms this afternoon. Snow accumulation up to 2 inches. Breezy with highs around 40. North winds 20 to 25 mph with gusts up to 40 mph, becoming east 10 to 15 mph with gusts up to 30 mph this afternoon. Chance of snow 90 percent. .TONIGHT...Cloudy. Snow showers with a slight chance of thunderstorms in the evening, then a chance of snow showers after midnight. New snow accumulation up to 3 inches. Lows in the lower 20s. South winds 10 to 15 mph. Chance of snow 80 percent. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 40s. .TUESDAY NIGHT...Mostly clear. Lows in the lower 20s. Southwest winds around 10 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the upper 50s. West winds 10 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 20s. .THURSDAY...Partly cloudy with a slight chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs around 60. Chance of rain 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 20s. .FRIDAY...Partly cloudy. A slight chance of. Highs in the lower 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .SUNDAY...Mostly sunny and breezy. Highs in the lower 70s. $$ WYZ010-182200- Northeast Johnson County- Including the city of Buffalo 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy. Patchy blowing snow this morning. Snow showers with a slight chance of rain showers this morning, then snow showers likely with a chance of rain showers this afternoon. Snow accumulation up to 1 inch. Breezy with highs in the lower 40s. North winds 20 to 25 mph with gusts up to 40 mph. Chance of precipitation 80 percent. .TONIGHT...Cloudy in the evening, then becoming partly cloudy. Breezy with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph in the evening. .TUESDAY...Mostly sunny. Highs in the upper 50s. .TUESDAY NIGHT...Mostly clear. Lows in the mid 30s. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the upper 60s. South winds around 10 mph with gusts up to 20 mph in the morning. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the upper 30s. Chance of rain 20 percent. .THURSDAY...Mostly cloudy with a chance of rain showers. A slight chance of thunderstorms in the afternoon. Breezy with highs in the upper 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy. A slight chance of rain showers and thunderstorms in the evening. Lows in the mid 30s. Chance of rain 20 percent. .FRIDAY...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows around 40. .SATURDAY...Mostly sunny. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SUNDAY...Mostly sunny. Highs around 80. $$ WYZ011-182200- Southeast Johnson County- Including the city of Kaycee 1047 AM MDT Mon May 18 2026 .TODAY...Patchy blowing snow this morning. Snow showers. Rain showers likely with a slight chance of thunderstorms this afternoon. Snow accumulation up to 3 inches. Breezy with highs around 40. North winds 15 to 25 mph with gusts up to 35 mph. Chance of precipitation 80 percent. .TONIGHT...Cloudy with a chance of rain and snow showers in the evening, then partly cloudy after midnight. Lows in the upper 20s. North winds 10 to 15 mph with gusts up to 25 mph in the evening. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 50s. Southwest winds around 10 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows around 30. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny. Highs in the mid 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of. Lows in the upper 30s. .THURSDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 30s. Chance of rain 30 percent. .FRIDAY...Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SATURDAY...Mostly sunny. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SUNDAY...Mostly sunny. Highs in the upper 70s. $$ WYZ027-182200- South Lincoln County- Including the cities of Kemmerer and Cokeville 1047 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Cloudy. Snow showers this morning, then a chance of snow showers, rain showers with a slight chance of thunderstorms this afternoon. Storm total snow accumulation around an inch. Highs around 40. North winds 10 to 15 mph with gusts up to 25 mph, becoming southeast this afternoon. Chance of precipitation 90 percent. .TONIGHT...Mostly cloudy. A chance of snow and rain showers in the evening. Lows in the lower 20s. South winds around 10 mph in the evening. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 40s. .TUESDAY NIGHT...Mostly clear. Lows in the mid 20s. .WEDNESDAY...Mostly sunny. Highs in the mid 50s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 30s. .THURSDAY...Partly cloudy and breezy. Highs around 60. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 30s. .FRIDAY...Partly cloudy. Highs in the lower 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SUNDAY...Mostly sunny and breezy. Highs in the lower 70s. $$ WYZ016-182200- Upper Wind River Basin- Including the city of Dubois 1047 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Cloudy. Snow showers this morning, then snow showers likely with a slight chance of thunderstorms this afternoon. Storm total snow accumulation around an inch. Breezy with highs in the upper 30s. East winds 15 to 20 mph with gusts up to 35 mph. Chance of snow 80 percent. .TONIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy after midnight. Lows in the mid 20s. East winds 10 to 15 mph in the evening. Chance of snow 30 percent. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 50. South winds around 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. Southwest winds 10 to 15 mph, becoming west after midnight. .WEDNESDAY...Sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. West winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of rain and snow showers after midnight. Lows in the mid 30s. Chance of precipitation 20 percent. .THURSDAY...Partly cloudy. A chance of rain and snow showers in the morning, then a slight chance of rain showers, thunderstorms and snow showers in the afternoon. Little or no snow accumulation. Highs in the mid 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of rain and snow showers. Lows in the lower 30s. Chance of precipitation 30 percent. .FRIDAY...Partly cloudy. A chance of rain showers and thunderstorms in the afternoon. Highs around 60. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY...Mostly sunny and breezy. Highs in the upper 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .SUNDAY...Mostly sunny and breezy. Highs around 70. $$ WYZ001-182200- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1047 AM MDT Mon May 18 2026 .TODAY...Mostly cloudy. A chance of snow showers this afternoon. Breezy with highs in the upper 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of snow 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Cold with lows around 20. North winds 10 to 15 mph in the evening. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 40s. West winds around 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 20s. Southwest winds around 10 mph with gusts up to 20 mph in the evening. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs around 50. Southwest winds around 10 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...A chance of rain showers with a slight chance of thunderstorms in the evening. Mostly cloudy with a chance of snow showers. Little or no snow accumulation. Lows in the upper 20s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a slight chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 40s. Chance of snow 20 percent. .THURSDAY NIGHT...Partly cloudy. A chance of snow showers, a slight chance of rain showers and thunderstorms in the evening. Lows in the upper 20s. Chance of precipitation 30 percent. .FRIDAY...Partly cloudy. A chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the mid 50s. Chance of precipitation 30 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 30s. .SATURDAY...Partly cloudy. Highs around 60. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 30s. .SUNDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. $$ WYZ029-182200- Flaming Gorge- 1047 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Cloudy. Snow showers this morning, then snow showers likely with a slight chance of thunderstorms this afternoon. Blowing snow this morning, then areas of blowing snow this afternoon. Snow may be heavy at times this morning with visibility one quarter mile or less at times. Snow accumulation of 2 to 5 inches. Windy with highs in the mid 30s. Northeast winds 20 to 30 mph. Gusts up to 50 mph this morning. Chance of snow 90 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 20s. East winds 10 to 15 mph in the evening. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 40s. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 20s. .WEDNESDAY...Mostly sunny. Highs in the mid 50s. West winds around 10 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s. .THURSDAY...Partly cloudy. A slight chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 30s. .FRIDAY...Partly cloudy. A slight chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SUNDAY...Mostly sunny. Highs in the lower 70s. $$ WYZ022-182200- Casper Mountain- 1047 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Snow showers. Blowing snow this morning. Areas of blowing snow this afternoon. Snow may be heavy at times this morning with visibility one quarter mile or less at times. Snow accumulation of 3 to 12 inches. Windy and much cooler with highs in the upper 20s. Northeast winds 20 to 30 mph with gusts up to 40 mph. Chance of snow 90 percent. .TONIGHT...Mostly cloudy. A chance of snow showers in the evening. Areas of fog in the evening. Cold with lows around 20. North winds 10 to 15 mph in the evening. Chance of snow 30 percent. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 30s. .TUESDAY NIGHT...Mostly clear. Cold with lows around 20. South winds around 10 mph. .WEDNESDAY...Mostly sunny. Highs in the upper 40s. Southwest winds around 10 mph with gusts up to 20 mph. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 30. .THURSDAY...Partly cloudy in the morning, then mostly cloudy with a chance of rain showers and thunderstorms in the afternoon. Highs around 50. Chance of rain 40 percent. .THURSDAY NIGHT...Partly cloudy. A slight chance of rain showers, thunderstorms and snow showers in the evening. Lows in the lower 30s. Chance of precipitation 20 percent. .FRIDAY...Partly cloudy with a slight chance of rain showers. A chance of snow showers in the morning, then a slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Chance of precipitation 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SUNDAY...Mostly sunny and breezy. Highs in the upper 60s. $$ WYZ002-182200- Absaroka Mountains- 1047 AM MDT Mon May 18 2026 .TODAY...Patchy blowing snow this morning. Snow showers this morning, then snow showers likely with a slight chance of thunderstorms this afternoon with visibility one quarter mile or less at times. Snow accumulation up to 4 inches. Breezy with highs in the lower 30s. Northeast winds 15 to 20 mph. Gusts up to 40 mph this morning. Chance of snow 90 percent. .TONIGHT...Mostly cloudy with snow showers likely in the evening, then partly cloudy after midnight. New snow accumulation up to 1 inch. Cold with lows 11 to 21. Northeast winds 10 to 15 mph with gusts up to 25 mph, becoming west after midnight. Chance of snow 60 percent. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 40. West winds around 10 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 20s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of snow showers, a slight chance of rain showers and thunderstorms in the afternoon. Highs in the mid 40s. West winds 10 to 15 mph with gusts up to 30 mph. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. Snow and rain showers likely in the evening, then a chance of snow showers after midnight. Little or no snow accumulation. Lows in the upper 20s. Chance of precipitation 60 percent. .THURSDAY...Partly cloudy with a chance of snow showers. A chance of rain showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Highs in the lower 40s. Chance of precipitation 50 percent. .THURSDAY NIGHT...A chance of rain showers with a slight chance of thunderstorms in the evening. Partly cloudy with a chance of snow showers. Lows in the upper 20s. Chance of precipitation 30 percent. .FRIDAY...Partly cloudy. A chance of thunderstorms, rain and snow showers in the afternoon. Highs in the upper 40s. Chance of precipitation 40 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 30s. .SATURDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the mid 50s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows in the mid 30s. .SUNDAY...Mostly sunny and breezy. Highs in the upper 50s. $$ WYZ007-182200- Owl Creek and Bridger Mountains- 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy with snow showers. Blowing snow this morning. Patchy blowing snow this afternoon. Snow may be heavy at times this morning with visibility one quarter mile or less at times. Snow accumulation of 1 to 6 inches. Very windy with highs in the mid 30s. North winds 30 to 40 mph with gusts up to 60 mph, diminishing to 20 to 30 mph with gusts up to 45 mph this afternoon. Chance of snow 90 percent. .TONIGHT...Mostly cloudy in the evening, then clearing. Lows in the mid 20s. North winds 10 to 15 mph with gusts up to 25 mph in the evening. .TUESDAY...Mostly sunny. Highs in the upper 40s. South winds 10 to 15 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows around 30. South winds 15 to 20 mph. .WEDNESDAY...Mostly sunny. Highs in the upper 50s. Southwest winds 10 to 15 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a chance of rain showers, snow showers with a slight chance of thunderstorms after midnight. Lows in the upper 30s. Chance of precipitation 30 percent. .THURSDAY...Partly cloudy with a chance of rain showers. A chance of snow showers in the morning, then a slight chance of thunderstorms and snow showers in the afternoon. Little or no snow accumulation. Breezy with highs in the lower 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy with a slight chance of rain and snow showers. Lows in the mid 30s. Chance of precipitation 20 percent. .FRIDAY...Partly cloudy. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SUNDAY...Mostly sunny and breezy. Highs in the lower 70s. $$ WYZ008-182200- Bighorn Mountains West- 1047 AM MDT Mon May 18 2026 .TODAY...Snow showers. A slight chance of thunderstorms this afternoon. Snow accumulation up to 7 inches. Breezy with highs in the lower 30s. North winds 15 to 20 mph. Gusts up to 35 mph this morning. Chance of snow 90 percent. .TONIGHT...Mostly cloudy with a chance of snow showers in the evening, then mostly clear after midnight. Lows in the lower 20s. North winds 10 to 15 mph with gusts up to 25 mph in the evening. Chance of snow 30 percent. .TUESDAY...Mostly sunny. Highs in the mid 40s. West winds around 10 mph. .TUESDAY NIGHT...Mostly clear. Lows in the upper 20s. South winds 10 to 15 mph with gusts up to 35 mph. .WEDNESDAY...Mostly sunny. A slight chance of. Highs in the lower 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of rain and snow showers. Lows in the mid 30s. Chance of precipitation 30 percent. .THURSDAY...Mostly cloudy with a chance of rain and snow showers. A slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Highs in the upper 40s. Chance of precipitation 50 percent. .THURSDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of rain and snow showers. Lows in the lower 30s. Chance of precipitation 20 percent. .FRIDAY...Partly cloudy with a chance of snow showers with a slight chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 50s. Chance of precipitation 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SUNDAY...Mostly sunny. A slight chance of. Breezy with highs in the mid 60s. $$ WYZ009-182200- Bighorn Mountains Southeast- 1047 AM MDT Mon May 18 2026 .TODAY...Areas of blowing snow this morning. Snow showers this morning, then snow showers with a slight chance of thunderstorms this afternoon. Snow accumulation of 1 to 7 inches. Breezy with highs in the lower 30s. North winds 15 to 20 mph with gusts up to 35 mph. Chance of snow 90 percent. .TONIGHT...Patchy fog in the evening. Cloudy with snow showers likely in the evening, then partly cloudy after midnight. New snow accumulation up to 1 inch. Lows in the lower 20s. Northeast winds 10 to 15 mph with gusts up to 25 mph, becoming west after midnight. Chance of snow 60 percent. .TUESDAY...Mostly sunny. Highs in the lower 40s. West winds around 10 mph. .TUESDAY NIGHT...Mostly clear. Lows in the mid 20s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny. A slight chance of. Highs in the lower 50s. West winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of snow showers. A slight chance of rain showers and thunderstorms in the evening, then a chance of rain showers after midnight. Lows in the lower 30s. Chance of precipitation 30 percent. .THURSDAY...Snow showers likely. A chance of rain showers in the morning, then rain showers likely with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Highs in the upper 40s. Chance of precipitation 70 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers, snow showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 30s. Chance of precipitation 30 percent. .FRIDAY...Partly cloudy with a chance of snow showers. A slight chance of rain showers in the morning, then a chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of precipitation 40 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SUNDAY...Mostly sunny. A slight chance of. Breezy with highs in the mid 60s. $$ WYZ012-182200- Teton and Gros Ventre Mountains- 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy with snow showers likely. A slight chance of thunderstorms this afternoon. Snow accumulation up to 1 inch. Breezy with highs in the mid 30s. Northeast winds 20 to 25 mph with gusts up to 35 mph, diminishing to 10 to 15 mph with gusts up to 25 mph this afternoon. Chance of snow 60 percent. .TONIGHT...Partly cloudy with a chance of snow showers in the evening, then mostly clear after midnight. Lows in the lower 20s. Northeast winds 10 to 15 mph in the evening. Chance of snow 30 percent. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 40s. West winds around 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 20s. Southwest winds around 10 mph with gusts up to 20 mph, becoming southeast after midnight. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 40s. South winds around 10 mph, becoming west in the afternoon. Gusts up to 30 mph. .WEDNESDAY NIGHT...Mostly cloudy. A slight chance of rain showers, thunderstorms and snow showers in the evening, then a chance of snow and rain showers after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a slight chance of snow showers. A slight chance of rain showers and thunderstorms in the afternoon. Highs in the upper 40s. Chance of precipitation 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 20s. .FRIDAY...Partly cloudy. A slight chance of thunderstorms, rain and snow showers in the morning, then a chance of thunderstorms, rain and snow showers in the afternoon. Highs in the lower 50s. Chance of precipitation 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 30s. .SATURDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 30s. .SUNDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the lower 60s. $$ WYZ014-182200- Wind River Mountains West- 1047 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Snow showers. Blowing snow this morning. Areas of blowing snow this afternoon. A slight chance of thunderstorms this afternoon. Visibility one quarter mile or less at times this morning. Snow accumulation up to 9 inches. Windy with highs in the upper 20s. Northeast winds 25 to 35 mph with gusts up to 60 mph, diminishing to 20 to 25 mph with gusts up to 40 mph this afternoon. Chance of snow 80 percent. .TONIGHT...Cloudy. Patchy fog in the evening. Snow showers with a slight chance of thunderstorms in the evening, then snow showers likely after midnight. Storm total snow accumulation of 2 to 4 inches. Cold with lows 13 to 23. East winds 10 to 15 mph in the evening. Chance of snow 80 percent. .TUESDAY...Partly cloudy. Highs in the upper 30s. Southwest winds around 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 20s. Southwest winds around 10 mph with gusts up to 20 mph in the evening. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 40s. West winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of. Lows in the upper 20s. .THURSDAY...Mostly cloudy with a chance of snow showers. A slight chance of rain showers and thunderstorms in the afternoon. Little or no snow accumulation. Highs in the mid 40s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of rain showers and thunderstorms in the evening. A slight chance of snow showers. Lows in the upper 20s. Chance of precipitation 20 percent. .FRIDAY...Partly cloudy. A chance of thunderstorms, rain and snow showers in the afternoon. Highs in the upper 40s. Chance of precipitation 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. .SATURDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs in the mid 50s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 30s. .SUNDAY...Mostly sunny and breezy. Highs in the upper 50s. $$ WYZ015-182200- Wind River Mountains East- 1047 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Blowing snow this morning. Snow showers this morning, then snow showers with a slight chance of thunderstorms this afternoon. Snow may be heavy at times this morning with visibility one quarter mile or less at times. Snow accumulation up to 10 inches. Windy with highs in the mid 20s. Northeast winds 20 to 30 mph with gusts up to 50 mph, diminishing to 15 to 20 mph with gusts up to 35 mph this afternoon. Chance of snow 90 percent. .TONIGHT...Mostly cloudy. Patchy fog in the evening. Snow showers, mainly in the evening. New snow accumulation up to 1 inch. Cold with lows 10 to 20. East winds around 10 mph with gusts up to 20 mph, becoming southwest after midnight. Chance of snow 80 percent. .TUESDAY...Partly cloudy. Highs in the mid 30s. Southwest winds around 10 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Cold with lows around 20. Southwest winds 10 to 15 mph. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the mid 40s. West winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 20s. .THURSDAY...Partly cloudy with a chance of snow showers. A chance of rain showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Highs in the lower 40s. Chance of precipitation 50 percent. .THURSDAY NIGHT...A chance of rain showers with a slight chance of thunderstorms in the evening. Partly cloudy with a chance of snow showers. Lows in the mid 20s. Chance of precipitation 30 percent. .FRIDAY...Partly cloudy. A chance of thunderstorms, snow and rain showers in the afternoon. Highs in the upper 40s. Chance of precipitation 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. .SATURDAY...Mostly sunny and breezy. Highs in the mid 50s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows in the mid 30s. .SUNDAY...Mostly sunny and breezy. Highs in the upper 50s. $$ WYZ019-182200- Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 1047 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Snow showers. Blowing snow this morning. Areas of blowing snow this afternoon. Snow may be heavy at times this morning with visibility one quarter mile or less at times. Snow accumulation of 1 to 13 inches. Windy, cooler with highs in the lower 30s. North winds 25 to 35 mph. Gusts up to 55 mph this morning. Chance of snow 90 percent. .TONIGHT...Mostly cloudy. A chance of snow showers in the evening. Patchy fog in the evening. Cold with lows 16 to 22. Northeast winds 10 to 15 mph in the evening. Chance of snow 30 percent. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 30s. .TUESDAY NIGHT...Mostly clear. Lows in the lower 20s. South winds around 10 mph with gusts up to 20 mph. .WEDNESDAY...Mostly sunny. Highs around 50. Southwest winds around 10 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 30s. .THURSDAY...Partly cloudy with a chance of rain showers. A slight chance of snow showers in the morning, then a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Highs in the lower 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A slight chance of rain and snow showers. Lows in the lower 30s. Chance of precipitation 20 percent. .FRIDAY...Partly cloudy. A slight chance of. Highs in the upper 50s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the mid 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SUNDAY...Mostly sunny. Highs in the lower 70s. $$ WYZ024-182200- Salt River and Wyoming Ranges- 1047 AM MDT Mon May 18 2026 .TODAY...Cloudy. Snow showers this morning, then snow showers likely with a slight chance of thunderstorms this afternoon. Snow accumulation up to 3 inches. Highs in the mid 30s. North winds 10 to 15 mph. Gusts up to 30 mph this morning. Chance of snow 90 percent. .TONIGHT...Patchy fog in the evening. Mostly cloudy with snow showers likely with a slight chance of thunderstorms in the evening, then partly cloudy with a chance of snow showers after midnight. New snow accumulation up to 1 inch. Lows in the lower 20s. Southwest winds around 10 mph in the evening. Chance of snow 60 percent. .TUESDAY...Partly cloudy. Highs in the lower 40s. Southwest winds around 10 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 20s. Southwest winds around 10 mph with gusts up to 20 mph, becoming south after midnight. .WEDNESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 50. Southwest winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 30s. .THURSDAY...Partly cloudy with a slight chance of rain showers. A slight chance of snow showers in the morning, then a slight chance of thunderstorms in the afternoon. Highs in the lower 50s. Chance of precipitation 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 30s. .FRIDAY...Partly cloudy with a slight chance of rain showers, thunderstorms and snow showers. Highs in the mid 50s. Chance of precipitation 20 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs in the lower 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SUNDAY...Mostly sunny and breezy. Highs in the mid 60s. $$ WYZ030-182200- East Sweetwater County- Including the city of Wamsutter 1047 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Snow showers this morning, then snow showers with a slight chance of thunderstorms this afternoon. Blowing snow. Snow may be heavy at times this morning with visibility one quarter mile or less at times. Snow accumulation up to 9 inches. Very windy and cooler with highs in the lower 30s. Northeast winds 30 to 40 mph. Gusts up to 60 mph, decreasing to 50 mph this afternoon. Chance of snow 90 percent. .TONIGHT...Mostly cloudy. Patchy fog. Breezy, cold with lows 16 to 22. Northeast winds 15 to 20 mph with gusts up to 30 mph in the evening. .TUESDAY...Mostly cloudy in the morning, then clearing. Highs in the upper 30s. .TUESDAY NIGHT...Mostly clear. Cold with lows around 20. .WEDNESDAY...Mostly sunny. Highs in the lower 50s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows around 30. .THURSDAY...Partly cloudy with a slight chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 20 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 30s. .FRIDAY...Partly cloudy. A slight chance of rain showers and thunderstorms in the afternoon. Highs around 60. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY...Mostly sunny. Highs in the upper 60s. .SATURDAY NIGHT...Partly cloudy. Lows around 40. .SUNDAY...Mostly sunny. Highs in the lower 70s. $$