FNUS53 KUNR 180818 FWFUNR Fire Weather Planning Forecast for NE Wyoming and WRN South Dakota National Weather Service Rapid City SD 218 AM MDT Mon May 18 2026 .DISCUSSION...Widespread precipitation develops today with rain across the plains and high elevation snow in the northern Black Hills. Freezing temperatures are expected across NE WY this morning with widespread freezing temperatures Monday night/Tuesday morning. Temperatures will warm to near seasonable levels by Wednesday. Warming trend will continue through the week into the weekend. WYZ314-182215- Northern Campbell- Including Gillette and Weston 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Snow showers and slight chance of rain showers in the morning, then chance of rain showers and slight chance of snow showers in the afternoon. Chc of wetting rain.50 percent. Max temperature.....Around 42. Min humidity........53-67 percent. 20-foot winds.......North 15 to 25 mph. Transport winds.....North around 30 mph. Smoke dispersal.....Good. Mixing height.......3600 to 4500 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Chc of wetting rain.0 percent. Min temperature.....Around 26. Max humidity........94-100 percent. 20-foot winds.......Northwest 10 to 15 mph with gusts to around 30 mph shifting to the west around 5 mph after midnight. Transport winds.....Northwest around 25 mph becoming west around 10 mph after midnight. Smoke dispersal.....Poor. Mixing height.......400 to 500 ft agl. .TUESDAY... Sky/weather.........Sunny. Chc of wetting rain.0 percent. Max temperature.....Around 59. Min humidity........19-25 percent. 20-foot winds.......West 5 to 10 mph. Transport winds.....West 10 to 15 mph. Smoke dispersal.....Fair increasing to good in the afternoon. Mixing height.......7300 to 9200 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Mostly clear. Lows in the mid 30s. Highs in the upper 60s. Southwest winds around 20 mph. .THURSDAY...Mostly cloudy. Showers likely and slight chance of thunderstorms. Lows in the upper 30s. Highs around 60. North winds 10 to 15 mph. .FRIDAY...Partly cloudy. Slight chance of showers. Lows in the mid 30s. Highs in the upper 60s. West winds 10 to 15 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows around 40. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the lower 80s. $$ WYZ315-182215- Southern Campbell- Including Wright and Savageton 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Slight chance of rain showers in the morning. Snow showers through the day. Chance of rain showers in the afternoon. Chc of wetting rain.60 percent. Max temperature.....Around 39. Min humidity........72-78 percent. 20-foot winds.......North 15 to 25 mph with gusts to around 35 mph. Transport winds.....North around 35 mph. Smoke dispersal.....Good. Mixing height.......2900 to 3700 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Slight chance of snow showers in the evening. Chc of wetting rain.0 percent. Min temperature.....Around 24. Max humidity........100 percent. 20-foot winds.......North 15 to 20 mph with gusts to around 30 mph becoming west 5 to 10 mph after midnight. Transport winds.....North around 25 mph becoming west around 10 mph after midnight. Smoke dispersal.....Poor. Mixing height.......400 to 500 ft agl. .TUESDAY... Sky/weather.........Sunny. Chc of wetting rain.0 percent. Max temperature.....Around 55. Min humidity........26-32 percent. 20-foot winds.......West 10 to 15 mph. Transport winds.....West around 15 mph. Smoke dispersal.....Good. Mixing height.......6900 to 8700 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows around 30. Highs in the mid 60s. Southwest winds around 15 mph. .THURSDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs in the upper 50s. North winds around 15 mph. .FRIDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 30s. Highs in the mid 60s. West winds around 15 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows in the lower 40s. Highs around 80. $$ WYZ316-182215- Crook County Plains- Including Moorcroft, Devils Tower, Hulett, and New Haven 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers in the morning. Chance of snow showers through the day. Chance of rain showers in the afternoon. Chc of wetting rain.60 percent. Max temperature.....Around 42. Min humidity........60-74 percent. 20-foot winds.......North 10 to 20 mph. Transport winds.....North around 30 mph. Smoke dispersal.....Good. Mixing height.......3100 to 3900 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Slight chance of rain showers and snow showers in the evening. Chc of wetting rain.0 percent. Min temperature.....Around 25. Max humidity........100 percent. 20-foot winds.......Northwest 10 to 15 mph. Gusts to around 25 mph in the evening. Transport winds.....Northwest around 25 mph becoming west around 10 mph after midnight. Smoke dispersal.....Poor. Mixing height.......400 to 500 ft agl. .TUESDAY... Sky/weather.........Sunny. Chc of wetting rain.0 percent. Max temperature.....Around 58. Min humidity........24 percent. 20-foot winds.......West 5 to 10 mph. Transport winds.....West around 15 mph. Smoke dispersal.....Fair increasing to good in the afternoon. Mixing height.......6800 to 8600 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the lower 30s. Highs in the upper 60s. South winds 15 to 20 mph. .THURSDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the lower 60s. North winds 10 to 15 mph. .FRIDAY...Partly cloudy. Slight chance of showers. Lows in the mid 30s. Highs in the upper 60s. West winds around 10 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows in the lower 40s. Highs in the lower 80s. $$ WYZ317-182215- Weston County Plains- Including Newcastle, Upton, and Rochelle 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers and chance of snow showers. Chc of wetting rain.60 percent. Max temperature.....Around 41. Min humidity........60-74 percent. 20-foot winds.......North 15 to 25 mph with gusts to around 35 mph. Transport winds.....North around 35 mph. Smoke dispersal.....Good. Mixing height.......2500 to 3200 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Chc of wetting rain.0 percent. Min temperature.....Around 26. Max humidity........92-100 percent. 20-foot winds.......Northwest 15 to 20 mph with gusts to around 30 mph decreasing to 5 to 10 mph after midnight. Transport winds.....North around 30 mph becoming northwest around 15 mph after midnight. Smoke dispersal.....Poor. Mixing height.......400 to 500 ft agl. .TUESDAY... Sky/weather.........Sunny. Chc of wetting rain.0 percent. Max temperature.....Around 57. Min humidity........21 percent. 20-foot winds.......Northwest 5 to 10 mph. Gusts to around 20 mph in the afternoon. Transport winds.....Northwest around 15 mph. Smoke dispersal.....Fair increasing to very good in the afternoon. Mixing height.......6600 to 8300 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows around 30. Highs in the upper 60s. South winds 10 to 15 mph. .THURSDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the lower 60s. Northwest winds 15 to 20 mph. .FRIDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 30s. Highs in the upper 60s. Northwest winds 15 to 20 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the lower 80s. $$ WYZ318-182215- Wyoming Black Hills- Including Sundance and Four Corners 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Snow showers and rain showers. Chc of wetting rain.70 percent. Max temperature.....35-41. Min humidity........72-86 percent. 20-foot winds.......North 10 to 15 mph with gusts to around 30 mph. Transport winds.....North around 30 mph. Smoke dispersal.....Good. Mixing height.......2900 to 3700 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of snow showers and rain showers in the evening. Chc of wetting rain.10 percent. Min temperature.....23-29. Max humidity........93-100 percent. 20-foot winds.......Northwest 10 to 15 mph. Gusts to around 25 mph in the evening. Transport winds.....Northwest around 25 mph decreasing to around 15 mph after midnight. Smoke dispersal.....Poor. Mixing height.......700 to 800 ft agl. .TUESDAY... Sky/weather.........Sunny. Chc of wetting rain.0 percent. Max temperature.....51-57. Min humidity........25-31 percent. 20-foot winds.......Northwest 5 to 10 mph. Transport winds.....West around 15 mph. Smoke dispersal.....Good. Mixing height.......6700 to 8400 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the lower 30s. Highs in the mid 60s. Southwest winds around 15 mph. .THURSDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs in the upper 50s. Northwest winds 10 to 15 mph. .FRIDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs in the lower 60s. Northwest winds 10 to 15 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the lower 40s. Highs in the lower 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. $$ SDZ327-182215- Butte County Area- Including Belle Fourche, Colony, and Newell 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely. Chc of wetting rain.50 percent. Max temperature.....Around 45. Min humidity........69 percent. 20-foot winds.......Northwest 15 to 25 mph with gusts to around 35 mph. Transport winds.....Northwest around 35 mph. Smoke dispersal.....Good. Mixing height.......3200 to 4100 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers in the evening. Chc of wetting rain.10 percent. Min temperature.....Around 31. Max humidity........93-99 percent. 20-foot winds.......Northwest 15 to 25 mph with gusts to around 35 mph decreasing to 10 to 15 mph after midnight. Transport winds.....Northwest around 35 mph decreasing to around 20 mph after midnight. Smoke dispersal.....Poor. Mixing height.......700 to 800 ft agl. .TUESDAY... Sky/weather.........Sunny. Chc of wetting rain.0 percent. Max temperature.....Around 59. Min humidity........26 percent. 20-foot winds.......Northwest 10 to 20 mph. Transport winds.....Northwest around 25 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......6400 to 8100 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer, breezy. Mostly clear. Lows in the lower 30s. Highs in the lower 70s. South winds 15 to 25 mph. .THURSDAY...Windy. Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Northwest winds around 30 mph. .FRIDAY...Breezy. Partly cloudy. Slight chance of showers. Lows in the upper 30s. Highs in the upper 60s. Northwest winds 20 to 25 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid 80s. $$ SDZ319-182215- Northern Black Hills- Including Lead, Deadwood, and Rochford 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Snow showers and slight chance of rain showers. Chc of wetting rain.70 percent. Max temperature.....29-35. Min humidity........85-93 percent. 20-foot winds.......North 10 to 15 mph with gusts to around 30 mph. Transport winds.....North 25 to 30 mph. Smoke dispersal.....Fair. Mixing height.......2000 to 2500 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of snow showers in the evening. Chc of wetting rain.20 percent. Min temperature.....18-26. Max humidity........99 percent. 20-foot winds.......Northwest 10 to 15 mph with gusts to around 25 mph. Transport winds.....Northwest 20 to 25 mph. Smoke dispersal.....Poor. Mixing height.......900 to 1000 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....44-52. Min humidity........32-38 percent. 20-foot winds.......Northwest 10 to 15 mph. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....Good. Mixing height.......6100 to 7700 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the upper 20s. Highs in the upper 50s. Southwest winds around 10 mph. .THURSDAY...Partly cloudy. Showers likely and chance of thunderstorms. Lows in the mid 30s. Highs in the mid 50s. Northwest winds 10 to 15 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 30s. Highs in the upper 50s. Northwest winds 10 to 15 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs in the mid 60s. .SUNDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid 70s. $$ SDZ320-182215- Central Black Hills- Including Custer, Hill City, and Keystone 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Snow showers and rain showers. Chc of wetting rain.60 percent. Max temperature.....32-38. Min humidity........79-91 percent. 20-foot winds.......North 15 to 20 mph with gusts to around 35 mph. Transport winds.....North around 30 mph. Smoke dispersal.....Fair. Mixing height.......2300 to 2900 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Slight chance of snow showers in the evening. Chc of wetting rain.0 percent. Min temperature.....19-27. Max humidity........91-100 percent. 20-foot winds.......Northwest 10 to 15 mph. Gusts to around 30 mph decreasing to gusts to around 20 mph after midnight. Transport winds.....Northwest 20 to 25 mph. Smoke dispersal.....Poor. Mixing height.......500 to 600 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....46-54. Min humidity........28-36 percent. 20-foot winds.......Northwest 5 to 10 mph with gusts to around 20 mph. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....Good. Mixing height.......6400 to 8000 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Mostly clear. Lows around 30. Highs around 60. Southwest winds 10 to 15 mph. .THURSDAY...Partly cloudy. Showers likely and chance of thunderstorms. Lows in the upper 30s. Highs in the upper 50s. Northwest winds around 10 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the mid 30s. Highs around 60. Northwest winds around 10 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 30s. Highs in the upper 60s. .SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid 70s. $$ SDZ321-182215- Southern Black Hills- Including Pringle, Custer State Park, and Wind Cave 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers and slight chance of snow showers. Chc of wetting rain.60 percent. Max temperature.....Around 40. Min humidity........69-79 percent. 20-foot winds.......North 15 to 20 mph with gusts to around 35 mph. Transport winds.....North around 30 mph. Smoke dispersal.....Fair. Mixing height.......2400 to 3000 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Slight chance of rain showers and snow showers in the evening. Chc of wetting rain.0 percent. Min temperature.....Around 27. Max humidity........87-93 percent. 20-foot winds.......Northwest 10 to 15 mph. Gusts to around 25 mph in the evening. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....Poor. Mixing height.......400 to 500 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 54. Min humidity........22-28 percent. 20-foot winds.......West 10 to 15 mph. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....Fair increasing to very good in the afternoon. Mixing height.......6400 to 8000 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Mostly clear. Slight chance of showers. Lows in the mid 30s. Highs in the lower 60s. Southwest winds 10 to 15 mph. .THURSDAY...Partly cloudy. Showers likely and slight chance of thunderstorms. Lows in the lower 40s. Highs in the lower 60s. West winds around 15 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows around 40. Highs in the mid 60s. Northwest winds 10 to 15 mph. .SATURDAY...Partly cloudy. Slight chance of showers. Lows in the lower 40s. Highs in the lower 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the lower 80s. $$ SDZ322-182215- Fall River County Area- Including Hot Springs, Edgemont, and Ardmore 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers. Chc of wetting rain.70 percent. Max temperature.....Around 43. Min humidity........67-79 percent. 20-foot winds.......North 15 to 25 mph with gusts to around 40 mph. Transport winds.....North around 35 mph. Smoke dispersal.....Fair. Mixing height.......2400 to 3100 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Chance of rain showers in the evening. Chc of wetting rain.20 percent. Min temperature.....Around 30. Max humidity........87-93 percent. 20-foot winds.......Northwest 10 to 20 mph. Transport winds.....Northwest 20 to 25 mph. Smoke dispersal.....Poor. Mixing height.......400 to 500 ft agl. .TUESDAY... Sky/weather.........Sunny. Chc of wetting rain.0 percent. Max temperature.....Around 58. Min humidity........22 percent. 20-foot winds.......West 10 to 15 mph with gusts to around 25 mph. Transport winds.....West around 25 mph. Smoke dispersal.....Good increasing to excellent in the afternoon. Mixing height.......6400 to 8100 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Mostly clear. Slight chance of showers. Lows in the mid 30s. Highs in the upper 60s. South winds 10 to 20 mph. .THURSDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. West winds around 20 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows around 40. Highs in the upper 60s. Northwest winds 15 to 20 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the mid 80s. $$ SDZ323-182215- Northern Foot Hills- Including Spearfish and Sturgis 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers and slight chance of snow showers. Chc of wetting rain.70 percent. Max temperature.....Around 41. Min humidity........77-83 percent. 20-foot winds.......Northwest 15 to 25 mph with gusts to around 35 mph. Transport winds.....Northwest around 30 mph. Smoke dispersal.....Good. Mixing height.......2700 to 3400 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers and slight chance of snow showers in the evening. Chc of wetting rain.20 percent. Min temperature.....Around 32. Max humidity........85-93 percent. 20-foot winds.......Northwest 10 to 20 mph. Gusts to around 30 mph in the evening. Transport winds.....Northwest around 30 mph becoming west around 20 mph after midnight. Smoke dispersal.....Poor. Mixing height.......700 to 800 ft agl. .TUESDAY... Sky/weather.........Sunny. Chc of wetting rain.0 percent. Max temperature.....Around 58. Min humidity........28 percent. 20-foot winds.......Northwest 10 to 20 mph. Transport winds.....West 20 to 25 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......6400 to 8100 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the mid 30s. Highs around 70. South winds around 15 mph. .THURSDAY...Partly cloudy. Showers likely and chance of thunderstorms. Lows in the lower 40s. Highs in the lower 60s. Northwest winds 15 to 20 mph. .FRIDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. Northwest winds 15 to 20 mph. .SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows around 50. Highs in the lower 80s. $$ SDZ324-182215- Eastern Foot Hills- Including Rapid City and Piedmont 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers. Chc of wetting rain.70 percent. Max temperature.....Around 42. Min humidity........81 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 40 mph. Transport winds.....North 35 to 40 mph. Smoke dispersal.....Good. Mixing height.......2100 to 2700 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Slight chance of rain showers in the evening. Chc of wetting rain.10 percent. Min temperature.....Around 31. Max humidity........86-92 percent. 20-foot winds.......Northwest 15 to 20 mph with gusts to around 35 mph decreasing to 5 to 10 mph with gusts to around 20 mph after midnight. Transport winds.....Northwest around 30 mph decreasing to around 20 mph after midnight. Smoke dispersal.....Poor. Mixing height.......500 to 600 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 58. Min humidity........28 percent. 20-foot winds.......North 10 to 15 mph with gusts to around 25 mph. Transport winds.....Northwest 20 to 25 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......6500 to 8200 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer. Mostly clear. Lows in the mid 30s. Highs in the upper 60s. South winds 10 to 20 mph. .THURSDAY...Partly cloudy. Chance of showers and thunderstorms. Lows in the lower 40s. Highs in the mid 60s. North winds 15 to 20 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. North winds 15 to 20 mph. .SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 80s. $$ SDZ325-182215- Custer County Plains- Including Hermosa, Fairburn, Buffalo Gap, and Folsom 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers. Chc of wetting rain.70 percent. Max temperature.....Around 44. Min humidity........79 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 45 mph. Transport winds.....North around 40 mph. Smoke dispersal.....Good. Mixing height.......2200 to 2800 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Slight chance of rain showers in the evening. Chc of wetting rain.10 percent. Min temperature.....Around 30. Max humidity........91-97 percent. 20-foot winds.......North 15 to 25 mph with gusts to around 35 mph becoming northwest 5 to 10 mph after midnight. Transport winds.....North around 35 mph becoming northwest around 15 mph after midnight. Smoke dispersal.....Poor. Mixing height.......400 to 500 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 59. Min humidity........29 percent. 20-foot winds.......Northwest 5 to 10 mph shifting to the east with gusts to around 20 mph in the afternoon. Transport winds.....West around 15 mph. Smoke dispersal.....Fair increasing to good in the afternoon. Mixing height.......6200 to 7800 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Breezy. Mostly clear. Lows in the mid 30s. Highs in the upper 60s. South winds 15 to 25 mph. .THURSDAY...Breezy. Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. Northwest winds 20 to 25 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows around 40. Highs around 70. North winds 15 to 20 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 80s. $$ SDZ326-182215- Pine Ridge Area- Including Pine Ridge, Oelrichs, Batesland, and Kyle 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers. Chc of wetting rain.80 percent. Max temperature.....Around 43. Min humidity........76-82 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 40 mph. Transport winds.....North around 40 mph. Smoke dispersal.....Good. Mixing height.......2100 to 2700 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers in the evening. Chc of wetting rain.20 percent. Min temperature.....Around 30. Max humidity........95-100 percent. 20-foot winds.......North 15 to 25 mph with gusts to around 35 mph shifting to the northwest 10 to 15 mph after midnight. Transport winds.....North around 30 mph becoming northwest around 15 mph after midnight. Smoke dispersal.....Poor. Mixing height.......500 to 600 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 59. Min humidity........26 percent. 20-foot winds.......Northwest 10 to 15 mph with gusts to around 25 mph. Transport winds.....West around 20 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......6100 to 7700 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Breezy. Partly cloudy. Chance of showers. Lows in the mid 30s. Highs in the upper 60s. South winds 15 to 25 mph. .THURSDAY...Windy. Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. Southwest winds 20 to 30 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs around 70. Northwest winds 15 to 20 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 80s. $$ SDZ328-182215- Perkins County- Including Lemmon and Bison 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Chance of rain showers in the morning, then rain showers likely in the afternoon. Chc of wetting rain.40 percent. Max temperature.....Around 46. Min humidity........63-71 percent. 20-foot winds.......North 15 to 25 mph. Transport winds.....North around 30 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......3200 to 4100 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Chc of wetting rain.20 percent. Min temperature.....Around 32. Max humidity........100 percent. 20-foot winds.......North 15 to 25 mph shifting to the northwest 10 to 15 mph after midnight. Transport winds.....North around 30 mph becoming northwest around 15 mph after midnight. Smoke dispersal.....Poor. Mixing height.......600 to 700 ft agl. .TUESDAY... Sky/weather.........Partly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 58. Min humidity........29 percent. 20-foot winds.......Northwest 10 to 20 mph. Transport winds.....Northwest around 20 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......5700 to 7200 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer, windy. Mostly clear. Lows in the lower 30s. Highs in the lower 70s. South winds 20 to 30 mph. .THURSDAY...Windy. Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. North winds 25 to 30 mph. .FRIDAY...Breezy. Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the upper 30s. Highs in the upper 60s. Northwest winds 20 to 25 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid 80s. $$ SDZ329-182215- West Central Plains- Including Faith, Ellsworth AFB, New Underwood, and Wall 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely in the morning, then rain showers in the afternoon. Chc of wetting rain.70 percent. Max temperature.....Around 46. Min humidity........70-78 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 40 mph. Transport winds.....North around 35 mph. Smoke dispersal.....Good. Mixing height.......2800 to 3500 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers in the evening. Chc of wetting rain.20 percent. Min temperature.....Around 32. Max humidity........89-99 percent. 20-foot winds.......Northwest 15 to 25 mph with gusts to around 35 mph decreasing to 10 to 15 mph after midnight. Transport winds.....Northwest around 35 mph decreasing to around 20 mph after midnight. Smoke dispersal.....Poor. Mixing height.......500 to 600 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 60. Min humidity........26 percent. 20-foot winds.......Northwest 10 to 20 mph. Transport winds.....Northwest around 25 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......6200 to 7800 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer, windy. Mostly clear. Lows in the mid 30s. Highs in the lower 70s. South winds 20 to 30 mph. .THURSDAY...Windy. Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. West winds around 30 mph. .FRIDAY...Breezy. Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs around 70. North winds 20 to 25 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 80s. $$ SDZ332-182215- Badlands Area- Including Interior, Scenic, Rockyford, and Wanblee 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Chance of rain showers in the morning, then rain showers in the afternoon. Chc of wetting rain.80 percent. Max temperature.....Around 45. Min humidity........73-79 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 40 mph. Transport winds.....North around 40 mph. Smoke dispersal.....Good. Mixing height.......2400 to 3100 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers in the evening. Chc of wetting rain.30 percent. Min temperature.....Around 32. Max humidity........94-100 percent. 20-foot winds.......North 15 to 25 mph with gusts to around 35 mph shifting to the northwest 10 to 15 mph after midnight. Transport winds.....North around 35 mph becoming northwest around 15 mph after midnight. Smoke dispersal.....Poor. Mixing height.......500 to 600 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 59. Min humidity........28 percent. 20-foot winds.......Northwest 15 to 20 mph. Transport winds.....Northwest 20 to 25 mph. Smoke dispersal.....Good. Mixing height.......5600 to 7000 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Windy. Partly cloudy. Slight chance of showers. Lows in the mid 30s. Highs in the upper 60s. South winds 20 to 30 mph. .THURSDAY...Windy. Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs around 70. Southwest winds 25 to 30 mph. .FRIDAY...Breezy. Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the lower 70s. North winds 15 to 25 mph. .SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the upper 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 80s. $$ SDZ333-182215- Bennett County Area- Including Martin, Tuthill, Allen, and Long Valley 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Rain showers likely in the morning, then rain showers in the afternoon. Chc of wetting rain.70 percent. Max temperature.....Around 43. Min humidity........80 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 40 mph. Transport winds.....North 35 to 40 mph. Smoke dispersal.....Good. Mixing height.......2000 to 2600 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers in the evening. Chc of wetting rain.30 percent. Min temperature.....Around 31. Max humidity........100 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 40 mph shifting to the northwest 15 to 20 mph after midnight. Transport winds.....North around 40 mph becoming northwest around 20 mph after midnight. Smoke dispersal.....Poor. Mixing height.......800 to 900 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 57. Min humidity........30 percent. 20-foot winds.......Northwest 15 to 20 mph. Transport winds.....Northwest around 25 mph. Smoke dispersal.....Good. Mixing height.......4800 to 6100 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Windy. Partly cloudy. Chance of showers. Lows in the mid 30s. Highs in the mid 60s. South winds 25 to 35 mph. .THURSDAY...Windy. Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. South winds 30 to 35 mph. .FRIDAY...Breezy. Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. Northwest winds 20 to 25 mph. .SATURDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the mid 40s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 80s. $$ SDZ330-182215- Ziebach County- Including Dupree and Glad Valley 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Chance of rain showers in the morning, then rain showers in the afternoon. Chc of wetting rain.60 percent. Max temperature.....Around 47. Min humidity........70-78 percent. 20-foot winds.......North 15 to 25 mph. Transport winds.....North around 30 mph. Smoke dispersal.....Good. Mixing height.......2800 to 3500 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Chc of wetting rain.30 percent. Min temperature.....Around 32. Max humidity........100 percent. 20-foot winds.......Northwest 10 to 20 mph. Gusts to around 30 mph in the evening. Transport winds.....Northwest 20 to 25 mph. Smoke dispersal.....Poor. Mixing height.......600 to 700 ft agl. .TUESDAY... Sky/weather.........Partly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 58. Min humidity........32 percent. 20-foot winds.......Northwest 10 to 20 mph. Transport winds.....Northwest around 20 mph. Smoke dispersal.....Good. Mixing height.......5200 to 6600 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer, windy. Mostly clear. Lows in the lower 30s. Highs in the lower 70s. South winds 20 to 30 mph. .THURSDAY...Breezy. Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. South winds 20 to 25 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows around 40. Highs in the upper 60s. North winds 15 to 20 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 80s. $$ SDZ331-182215- Haakon County Area- Including Philip, Kadoka, Belvidere, and Midland 218 AM MDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Chance of rain showers in the morning, then rain showers in the afternoon. Chc of wetting rain.70 percent. Max temperature.....Around 47. Min humidity........74-80 percent. 20-foot winds.......North 15 to 25 mph with gusts to around 35 mph. Transport winds.....North around 30 mph. Smoke dispersal.....Good. Mixing height.......2600 to 3300 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Rain showers likely in the evening. Chc of wetting rain.30 percent. Min temperature.....Around 32. Max humidity........99 percent. 20-foot winds.......Northwest 10 to 20 mph. Gusts to around 30 mph in the evening. Transport winds.....North around 30 mph becoming northwest around 20 mph after midnight. Smoke dispersal.....Poor. Mixing height.......500 to 600 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 59. Min humidity........27-33 percent. 20-foot winds.......Northwest 10 to 20 mph. Transport winds.....Northwest around 25 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......5300 to 6700 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Warmer, windy. Mostly clear. Lows in the lower 30s. Highs around 70. South winds 20 to 30 mph. .THURSDAY...Breezy. Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the lower 70s. South winds 20 to 25 mph. .FRIDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs around 70. North winds 15 to 20 mph. .SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the upper 70s. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 80s. $$ SDZ334-182215- Mellette and Todd Counties- Including Mission, White River, and Saint Francis 318 AM CDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Chance of rain showers in the morning, then rain showers in the afternoon. Chc of wetting rain.60 percent. Max temperature.....Around 45. Min humidity........80-86 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 40 mph. Transport winds.....North 35 to 40 mph. Smoke dispersal.....Good. Mixing height.......2100 to 2700 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Rain showers likely in the evening. Chc of wetting rain.30 percent. Min temperature.....Around 33. Max humidity........100 percent. 20-foot winds.......North 20 to 30 mph with gusts to around 40 mph becoming northwest 10 to 20 mph after midnight. Transport winds.....North around 40 mph becoming northwest around 25 mph after midnight. Smoke dispersal.....Poor. Mixing height.......700 to 800 ft agl. .TUESDAY... Sky/weather.........Mostly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 57. Min humidity........32-40 percent. 20-foot winds.......Northwest 15 to 25 mph. Transport winds.....Northwest 25 to 30 mph. Smoke dispersal.....Good increasing to very good in the afternoon. Mixing height.......4800 to 6000 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Windy. Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. South winds 25 to 35 mph. .THURSDAY...Windy. Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. South winds 30 to 35 mph. .FRIDAY...Breezy. Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs around 70. Northwest winds 20 to 25 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 40s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows around 50. Highs in the mid 80s. $$ SDZ335-182215- Tripp County- Including Winner, Colome, and Hamill 318 AM CDT Mon May 18 2026 .TODAY... Sky/weather.........Cloudy. Slight chance of rain showers in the morning, then rain showers in the afternoon. Chc of wetting rain.60 percent. Max temperature.....Around 48. Min humidity........77-87 percent. 20-foot winds.......North 15 to 25 mph with gusts to around 35 mph. Transport winds.....North 30 to 35 mph. Smoke dispersal.....Good. Mixing height.......2100 to 2700 ft agl. .TONIGHT... Sky/weather.........Mostly cloudy. Rain showers likely in the evening. Chc of wetting rain.40 percent. Min temperature.....Around 34. Max humidity........100 percent. 20-foot winds.......Northwest 20 to 30 mph. Gusts to around 40 mph in the evening. Transport winds.....Northwest 30 to 35 mph. Smoke dispersal.....Poor. Mixing height.......800 to 900 ft agl. .TUESDAY... Sky/weather.........Partly sunny. Chc of wetting rain.0 percent. Max temperature.....Around 57. Min humidity........42 percent. 20-foot winds.......Northwest 15 to 25 mph. Transport winds.....Northwest around 30 mph. Smoke dispersal.....Very good. Mixing height.......4800 to 6000 ft agl. .FORECAST DAYS 3 THROUGH 7... .WEDNESDAY...Breezy. Partly cloudy. Lows in the lower 30s. Highs in the mid 60s. South winds 15 to 25 mph. .THURSDAY...Breezy. Mostly cloudy. Chance of showers. Lows in the lower 40s. Highs around 70. South winds around 25 mph. .FRIDAY...Breezy. Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs around 70. Northwest winds 20 to 25 mph. .SATURDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 40s. Highs in the mid 70s. .SUNDAY...Partly cloudy. Lows around 50. Highs in the mid 80s. $$