FPUS55 KMSO 200623 ZFPMSO Zone Forecast Product National Weather Service Missoula MT 1223 AM MDT Wed May 20 2026 MTZ001-202200- Kootenai/Cabinet Region- Including the cities of Libby and Eureka 1223 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. A 50 percent chance of showers and thunderstorms in the afternoon. Highs in the 60s to lower 70s. .TONIGHT...Mostly clear. A 20 percent chance of showers and thunderstorms in the evening. Lows in the 30s to lower 40s. .THURSDAY...Mostly sunny. Highs in the upper 60s to mid 70s. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid 40s. .FRIDAY...Mostly sunny. Highs in the 70s. .FRIDAY NIGHT...Partly cloudy. Lows in the 40s. .SATURDAY...Partly cloudy. Highs in the mid 70s to lower 80s. .SATURDAY NIGHT...Partly cloudy. Lows in the 40s. .SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s to lower 50s. .MEMORIAL DAY...Partly cloudy. Slight chance of rain in the morning, then slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Highs in the 70s. .MONDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the 40s. .TUESDAY...Mostly cloudy with a 40 percent chance of rain. Highs in the 60s. $$ MTZ002-202200- West Glacier Region- Including the city of Swan Lake 1223 AM MDT Wed May 20 2026 .TODAY...Chance of thunderstorms through the day. Chance of rain showers and areas of snow in the morning, then rain and snow showers likely in the afternoon. Chance of precipitation 70 percent. No snow accumulation. Highs in the upper 40s to mid 50s. .TONIGHT...Mostly cloudy with a 40 percent chance of rain in the evening, then partly cloudy after midnight. Lows in the 30s. .THURSDAY...Partly cloudy. Highs in the upper 50s to mid 60s. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 30s to lower 40s. .FRIDAY...Partly cloudy. Highs in the 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid 40s. .SATURDAY...Partly cloudy. Highs in the mid 60s to lower 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the 40s. .SUNDAY...Mostly sunny. Highs in the upper 60s to mid 70s. .SUNDAY NIGHT...Partly cloudy. Lows in the 40s to lower 50s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the 60s to lower 70s. .MONDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the 40s. .TUESDAY...Mostly cloudy with a 50 percent chance of rain. Highs in the 50s to lower 60s. $$ MTZ003-202200- Flathead/Mission Valleys- Including the cities of Kalispell, Polson, and St. Ignatius 1223 AM MDT Wed May 20 2026 .TODAY...Chance of thunderstorms through the day. Areas of rain in the morning, then rain showers likely in the afternoon. Chance of precipitation 70 percent. Highs in the mid 50s to lower 60s. .TONIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then mostly clear after midnight. Chance of precipitation 50 percent. Lows in the 30s. .THURSDAY...Mostly sunny. Highs in the 60s. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 30s to mid 40s. .FRIDAY...Partly cloudy. Highs in the upper 60s to mid 70s. .FRIDAY NIGHT...Partly cloudy. Lows in the 40s. .SATURDAY...Partly cloudy. Highs in the 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the 40s to lower 50s. .SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 40s to lower 50s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the 70s. .MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain. Lows in the 40s. .TUESDAY...Mostly cloudy with a 40 percent chance of rain. Highs in the upper 50s to mid 60s. $$ MTZ004-202200- Lower Clark Fork Region- Including the cities of Noxon, Thompson Falls, and Superior 1223 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. A 50 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 50s to mid 60s. .TONIGHT...Rain showers likely and a slight chance of thunderstorms in the evening, then mostly clear after midnight. Chance of precipitation 70 percent. Lows in the 30s to lower 40s. .THURSDAY...Mostly sunny. Highs in the 60s. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 30s to lower 40s. .FRIDAY...Partly cloudy. Highs in the upper 60s to mid 70s. .FRIDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. .SATURDAY...Partly cloudy. Highs in the 70s. .SATURDAY NIGHT...Mostly clear. Lows in the 40s. .SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the 40s to lower 50s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of rain in the afternoon. Highs in the upper 60s to mid 70s. .MONDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the upper 30s to mid 40s. .TUESDAY...Mostly cloudy with a 50 percent chance of rain. Highs in the mid 50s to lower 60s. $$ MTZ005-202200- Missoula/Bitterroot Valleys- Including the cities of Hamilton and Darby 1223 AM MDT Wed May 20 2026 .TODAY...Slight chance of rain late in the morning. Rain showers likely and a chance of thunderstorms in the afternoon. Chance of precipitation 70 percent. Highs in the lower to mid 60s. .TONIGHT...Rain showers likely and a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Chance of precipitation 70 percent. Lows in the mid to upper 30s. .THURSDAY...Partly cloudy. Highs in the mid to upper 60s. .THURSDAY NIGHT...Partly cloudy. Lows near 40. .FRIDAY...Partly cloudy. Highs in the lower 70s. .FRIDAY NIGHT...Mostly clear. Lows in the lower to mid 40s. .SATURDAY...Mostly sunny. Highs in the mid to upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid to upper 40s. .SUNDAY...Mostly sunny. Highs near 80. .SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 40s. .MEMORIAL DAY...Partly cloudy. Highs in the mid to upper 70s. .MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain. Lows in the lower to mid 40s. .TUESDAY...Mostly cloudy with a 50 percent chance of rain. Cooler. Highs in the lower to mid 60s. $$ MTZ006-202200- Bitterroot/Sapphire Mountains- Including the city of Sula 1223 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. A 50 percent chance of showers and thunderstorms in the afternoon. Highs in the 50s. Northwest winds to 15 mph in the afternoon. .TONIGHT...Mostly cloudy. Chance of rain showers, snow showers and a slight chance of thunderstorms in the evening, then a chance of rain and snow after midnight. Chance of precipitation 50 percent. Lows in the 30s. Northwest winds to 15 mph. .THURSDAY...Mostly cloudy in the morning then clearing. Highs in the 50s to lower 60s. .THURSDAY NIGHT...Partly cloudy. Lows in the 30s. .FRIDAY...Partly cloudy. Highs in the 60s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. .SATURDAY...Mostly sunny. Highs in the upper 60s to mid 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid 40s. .SUNDAY...Mostly sunny. Highs in the 70s. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid 40s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the 70s. .MONDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. A 20 percent chance of rain. Lows in the mid 30s to lower 40s. .TUESDAY...A chance of rain in the morning, then rain showers likely and a slight chance of thunderstorms in the afternoon. Chance of precipitation 60 percent. Cooler. Highs in the mid 50s to lower 60s. $$ MTZ007-202200- Butte/Blackfoot Region- Including the cities of Anaconda, Deer Lodge, and Drummond 1223 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. A 50 percent chance of showers and thunderstorms in the afternoon. Highs in the 50s. Northwest winds to 15 mph in the afternoon. .TONIGHT...Rain showers likely and a slight chance of thunderstorms in the evening, then a chance of rain and snow after midnight. Chance of precipitation 90 percent. No snow accumulation. Lows in the 30s. North winds to 15 mph. .THURSDAY...Mostly cloudy. Highs in the 50s. North winds to 15 mph. .THURSDAY NIGHT...Partly cloudy. Lows in the 30s. .FRIDAY...Partly cloudy. Highs in the 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s to lower 40s. .SATURDAY...Partly cloudy. Highs in the upper 60s to mid 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid 40s. .SUNDAY...Mostly sunny. Highs in the 70s. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid 40s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the 70s. .MONDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. A 30 percent chance of rain. Lows in the upper 30s to mid 40s. .TUESDAY...A chance of rain in the morning, then rain showers likely and a slight chance of thunderstorms in the afternoon. Chance of precipitation 70 percent. Highs in the upper 50s to mid 60s. $$ MTZ043-202200- Potomac/Seeley Lake Region- Including the cities of East Missoula, Seeley Lake, and Clinton 1223 AM MDT Wed May 20 2026 .TODAY...Slight chance of rain late in the morning. Rain showers likely and a chance of thunderstorms in the afternoon. Chance of precipitation 70 percent. Highs in the 50s. .TONIGHT...Rain showers likely and a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of rain after midnight. Chance of precipitation 70 percent. Lows in the 30s. .THURSDAY...Partly cloudy. Highs in the mid 50s to lower 60s. .THURSDAY NIGHT...Partly cloudy. Lows in the 30s to lower 40s. .FRIDAY...Partly cloudy. Highs in the 60s. .FRIDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. .SATURDAY...Partly cloudy. Highs in the mid 60s to lower 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the 40s. .SUNDAY...Mostly sunny. Highs in the 70s. .SUNDAY NIGHT...Partly cloudy. Lows in the 40s to lower 50s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 60s to mid 70s. .MONDAY NIGHT...Mostly cloudy with a 30 percent chance of rain. Lows in the upper 30s to mid 40s. .TUESDAY...Mostly cloudy with a 50 percent chance of rain. Highs in the upper 50s to mid 60s. $$ IDZ009-202200- Western Lemhi County- Including the city of Shoup 1223 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. Highs in the upper 50s to mid 60s. .TONIGHT...Mostly cloudy. Chance of rain showers and a slight chance of thunderstorms in the evening, then a chance of rain and snow after midnight. Chance of precipitation 50 percent. Lows in the mid 30s to lower 40s. North winds to 15 mph. .THURSDAY...Mostly cloudy in the morning then clearing. Highs in the 60s. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid 40s. .FRIDAY...Partly cloudy. Highs in the mid 60s to lower 70s. .FRIDAY NIGHT...Mostly clear. Lows in the 40s. .SATURDAY...Mostly sunny. Highs in the 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the 40s to lower 50s. .SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 40s to lower 50s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the 70s to lower 80s. .MONDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. A 20 percent chance of rain. Lows in the 40s. .TUESDAY...A chance of rain in the morning, then rain likely in the afternoon. Chance of rain 60 percent. Highs in the upper 50s to mid 60s. $$ IDZ010-202200- Eastern Lemhi County- Including the cities of Salmon and Leadore 1223 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. Highs in the mid 50s to lower 60s. Northwest winds to 15 mph in the afternoon. .TONIGHT...Rain likely and a slight chance of thunderstorms in the evening, then a chance of rain and snow after midnight. Chance of precipitation 70 percent. No snow accumulation. Lows in the 30s. Northwest winds to 15 mph. .THURSDAY...Partly cloudy. A 20 percent chance of rain and snow in the morning. Highs in the upper 50s to mid 60s. North winds to 15 mph. .THURSDAY NIGHT...Partly cloudy. Lows in the 30s. Northeast winds to 15 mph. .FRIDAY...Partly cloudy. Highs in the mid 60s to lower 70s. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s to lower 40s. .SATURDAY...Mostly sunny. Highs in the 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the 40s. .SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the 40s to lower 50s. .MEMORIAL DAY...Partly cloudy. Highs in the mid 70s to lower 80s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of rain. Lows in the 40s. .TUESDAY...Mostly cloudy. A chance of rain in the morning, then chance of rain showers and a slight chance of thunderstorms in the afternoon. Chance of precipitation 50 percent. Highs in the 60s. $$ IDZ005-202200- Northern Clearwater Mountains- Including the cities of Pierce and Elk River 1123 PM PDT Tue May 19 2026 .TODAY...Mostly cloudy. Highs in the 60s. .TONIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then mostly clear after midnight. Chance of precipitation 30 percent. Lows in the 30s. .THURSDAY...Sunny. Highs in the mid 60s to lower 70s. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 30s to lower 40s. .FRIDAY...Mostly sunny. Highs in the upper 60s to mid 70s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. .SATURDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SATURDAY NIGHT...Partly cloudy. Lows in the 40s. .SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid 40s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of rain in the afternoon. Highs in the upper 60s to mid 70s. .MONDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 30s to lower 40s. .TUESDAY...Mostly cloudy with a 50 percent chance of rain. Cooler. Highs in the 50s. $$ IDZ006-202200- Southern Clearwater Mountains- Including the cities of Powell, Elk City, and Dixie 1123 PM PDT Tue May 19 2026 .TODAY...Mostly cloudy. Highs 51 to 65. Northwest winds to 15 mph in the afternoon. .TONIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of rain after midnight. Chance of precipitation 50 percent. Lows 31 to 45. North winds to 15 mph. .THURSDAY...Mostly sunny. Highs 57 to 70. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 33 to 48. .FRIDAY...Mostly sunny. Highs 60 to 75. .FRIDAY NIGHT...Mostly clear. Lows 35 to 50. .SATURDAY...Mostly sunny. Highs 66 to 81. .SATURDAY NIGHT...Partly cloudy. Lows 37 to 52. .SUNDAY...Mostly sunny. Highs 70 to 84. .SUNDAY NIGHT...Partly cloudy. Lows 37 to 52. .MEMORIAL DAY...Partly cloudy. Highs 66 to 79. .MONDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the 30s to mid 40s. .TUESDAY...Rain likely. Chance of rain 60 percent. Cooler. Highs in the upper 40s to lower 60s. $$ IDZ007-202200- Orofino/Grangeville Region- Including the city of Kooskia 1123 PM PDT Tue May 19 2026 .TODAY...Mostly cloudy. Highs in the 60s to lower 70s. .TONIGHT...Partly cloudy. A 40 percent chance of rain in the evening. Lows in the upper 30s to mid 40s. Northwest winds to 15 mph. .THURSDAY...Mostly sunny. Highs in the 60s to mid 70s. .THURSDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the 40s. .FRIDAY...Sunny. Highs in the 70s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .SATURDAY...Mostly sunny. Highs in the 70s to mid 80s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s to lower 50s. .SUNDAY...Mostly sunny. Highs in the upper 70s to mid 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .MEMORIAL DAY...Partly cloudy. A 20 percent chance of rain in the afternoon. Highs in the upper 60s to mid 70s. .MONDAY NIGHT...A chance of rain in the evening, then rain likely after midnight. Chance of rain 60 percent. Lows in the 40s. .TUESDAY...Rain likely in the morning, then a chance of rain in the afternoon. Chance of rain 70 percent. Highs in the 50s to lower 60s. $$ IDZ008-202200- Lower Hells Canyon/Salmon River Region- Including the cities of Riggins and White Bird 1123 PM PDT Tue May 19 2026 .TODAY...Partly cloudy. Highs in the lower 60s to mid 70s. North winds to 15 mph in the afternoon. .TONIGHT...Partly cloudy. Lows in the 40s. Northeast winds 15 to 20 mph. .THURSDAY...Mostly sunny. Highs in the lower 60s to mid 70s. North winds to 15 mph. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 40s to lower 50s. Northeast winds to 15 mph. .FRIDAY...Mostly sunny. Highs 68 to 81. North winds to 15 mph. .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .SATURDAY...Mostly sunny. Highs 74 to 87. .SATURDAY NIGHT...Partly cloudy. Lows in the 50s. .SUNDAY...Mostly sunny. Highs 77 to 90. .SUNDAY NIGHT...Partly cloudy. Lows in the 50s. .MEMORIAL DAY...Partly cloudy. Highs in the lower 70s to mid 80s. .MONDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the 40s. .TUESDAY...Rain likely in the morning, then a chance of rain in the afternoon. Chance of rain 60 percent. Cooler. Highs in the 50s to mid 60s. $$