291 FNUS55 KRIW 301202 FWFRIW Fire Weather Planning Forecast for Western and Central Wyoming National Weather Service Riverton WY 501 AM MST Tue Dec 30 2025 .DISCUSSION... ***This product is currently automated with no discussion and will not be refreshed with all forecast updates. It should be used for planning purposes only. If you need additional fire weather information, please contact the NWS office in Riverton, Wyoming. The human written discussion section along with the fire weather forecast will resume regular operations sometime in Spring 2026.*** ---Thunderstorms imply strong gusty and erratic winds--- WYZ280-302300- Natrona County/Casper BLM- Including the cities of Casper and Midwest 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....38-43. 24 hr trend......7 degrees warmer. Min humidity........43-49 percent. 24 hr trend......2 percent drier. 20-foot winds.......Southwest winds 10 to 15 mph with higher gusts. Ridge top winds.....Southwest 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......400-1400 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....24-29. 24 hr trend......5 degrees warmer. Max humidity........55-61 percent. 24 hr trend......8 percent drier. Humidity recovery...Moderate. 20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 20 mph until 0300, then 25 mph. Ridge top winds.....Southwest 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......400-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....45-50. 24 hr trend......6 degrees warmer. Min humidity........39-45 percent. 24 hr trend......7 percent drier. 20-foot winds.......Southwest winds around 15 mph with higher gusts. Ridge top winds.....Southwest 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 20 to 25 mph. Mixing Height.......400-1200 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows around 30. Southwest winds around 15 mph. .NEW YEARS DAY...Mostly cloudy. Lows in the lower 30s. Highs in the upper 40s. Southwest winds around 15 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 30 to 35. Highs in the lower 50s. Southwest winds 15 to 20 mph. .SUNDAY...Partly cloudy. Lows in the mid 20s. Highs in the upper 40s. .MONDAY...Mostly sunny. Highs in the mid 40s. $$ WYZ283-302300- Upper Wind River Basin/Wind River Basin- Including the cities of Crowheart, Lander, Riverton, and Shoshoni 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....38-43. 24 hr trend......6 degrees warmer. Min humidity........44-50 percent. 24 hr trend......6 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph. Ridge top winds.....Southwest around 10 mph until 1200, then east. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 10 mph until 1300. South after 1400. Mixing Height.......400-1200 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....22-27. 24 hr trend......4 degrees warmer. Max humidity........64-70 percent. 24 hr trend......2 percent drier. Humidity recovery...Good. 20-foot winds.......Downslope/downvalley 4-7 mph until 0300, then southwest around 10 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......400-800 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....43-48. 24 hr trend......6 degrees warmer. Min humidity........47-53 percent. 24 hr trend......Unchanged. 20-foot winds.......Upslope/upvalley 5-9 mph. Ridge top winds.....South 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 10 mph until 0900, then south. Mixing Height.......400-1000 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 20s. Southwest winds around 10 mph. .NEW YEARS DAY...Mostly cloudy. Lows around 30. Highs in the mid 40s. Southwest winds around 10 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 27 to 32. Highs around 50. Southwest winds around 10 mph. .SUNDAY...Partly cloudy. Lows in the lower 20s. Highs in the mid 40s. .MONDAY...Mostly sunny. Highs in the lower 40s. $$ WYZ285-302300- South Bighorn Mountains- 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly cloudy then becoming partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....35-40. 24 hr trend......6 degrees warmer. Min humidity........47-53 percent. 24 hr trend......10 percent wetter. 20-foot winds.......West winds around 10 mph and gusty. Ridge top winds.....West around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 15 mph. Mixing Height.......200-1000 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....25-30. 24 hr trend......6 degrees warmer. Max humidity........54-60 percent. 24 hr trend......7 percent drier. Humidity recovery...Moderate. 20-foot winds.......West winds 10 to 15 mph and gusty. Ridge top winds.....West 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......200-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....42-47. 24 hr trend......7 degrees warmer. Min humidity........42-48 percent. 24 hr trend......5 percent drier. 20-foot winds.......West winds 10 to 15 mph with higher gusts. Ridge top winds.....West 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......200-600 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 30s. Southwest winds around 10 mph. .NEW YEARS DAY...Mostly cloudy. Lows in the lower 30s. Highs in the lower 40s. Southwest winds around 10 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 29 to 34. Highs in the mid 40s. Southwest winds 10 to 15 mph. .SUNDAY...Partly cloudy. Lows in the mid 20s. Highs in the upper 30s. .MONDAY...Mostly sunny. Highs in the upper 30s. $$ WYZ281-302300- Johnson County/Casper BLM- Including the cities of Buffalo and Kaycee 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....39-44. 24 hr trend......9 degrees warmer. Min humidity........48-54 percent. 24 hr trend......7 percent wetter. 20-foot winds.......Southwest winds around 10 mph until 1500, then upslope/upvalley 5-9 mph. Gusts up to 15 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 15 mph until 1300. Southwest after 1500. Mixing Height.......400-1400 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....25-30. 24 hr trend......6 degrees warmer. Max humidity........60-66 percent. 24 hr trend......7 percent drier. Humidity recovery...Good. 20-foot winds.......Southwest winds around 10 mph with gusts to around 15 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......400-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....46-51. 24 hr trend......7 degrees warmer. Min humidity........43-49 percent. 24 hr trend......6 percent drier. 20-foot winds.......Southwest winds around 10 mph and gusty. Ridge top winds.....Southwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......400-800 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows around 30. Southwest winds around 10 mph. .NEW YEARS DAY...Mostly cloudy. Lows in the lower 30s. Highs around 50. Winds generally less than 10 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 29 to 34. Highs 51 to 56. Southwest winds around 10 mph. .SUNDAY...Partly cloudy. Lows in the mid 20s. Highs in the upper 40s. .MONDAY...Mostly sunny. Highs in the upper 40s. $$ WYZ282-302300- South Bighorn Basin/Worland BLM- Including the cities of Ten Sleep, Thermopolis, and Worland 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....36-41. 24 hr trend......6 degrees warmer. Min humidity........45-51 percent. 24 hr trend......11 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph. Ridge top winds.....South around 10 mph until 1300, then southeast. Chc of wetting rain.Zero percent. Transport winds.....South around 10 mph until 1600, then southeast. Mixing Height.......400-1400 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....22-27. 24 hr trend......5 degrees warmer. Max humidity........64-70 percent. 24 hr trend......Unchanged. Humidity recovery...Good. 20-foot winds.......Downslope/downvalley 4-7 mph. Ridge top winds.....South around 10 mph. Chc of wetting rain.Zero percent. Transport winds.....South around 10 mph. Mixing Height.......400-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....44-49. 24 hr trend......5 degrees warmer. Min humidity........43-49 percent. 24 hr trend......1 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph until 0900. Ridge top winds.....South around 10 mph. Chc of wetting rain.Zero percent. Transport winds.....South around 10 mph. Mixing Height.......200-800 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 20s. Winds generally less than 10 mph. .NEW YEARS DAY...Mostly cloudy. Lows in the upper 20s. Highs in the upper 40s. Winds generally less than 10 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 26 to 31. Highs 49 to 54. South winds around 10 mph. .SUNDAY...Partly cloudy. Lows in the lower 20s. Highs in the mid 40s. .MONDAY...Mostly sunny. Highs in the mid 40s. $$ WYZ275-302300- North Bighorn Basin/Worland BLM- Including the cities of Greybull, Lovell, and Powell 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....36-41. 24 hr trend......5 degrees warmer. Min humidity........45-51 percent. 24 hr trend......13 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then southeast around 10 mph. Ridge top winds.....Southeast 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southeast 10 to 15 mph. Mixing Height.......400-1200 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....22-27. 24 hr trend......5 degrees warmer. Max humidity........66-72 percent. 24 hr trend......2 percent wetter. Humidity recovery...Good. 20-foot winds.......Southeast winds around 10 mph. Ridge top winds.....Southeast 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southeast 10 to 15 mph. Mixing Height.......400-800 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....43-48. 24 hr trend......5 degrees warmer. Min humidity........43-49 percent. 24 hr trend......1 percent wetter. 20-foot winds.......Southeast winds around 10 mph until 0900, then upslope/upvalley 5-9 mph. Ridge top winds.....Southeast 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southeast 10 to 15 mph. Mixing Height.......200-800 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 20s. Winds generally less than 10 mph. .NEW YEARS DAY...Mostly cloudy. Lows around 30. Highs in the mid 40s. Winds generally less than 10 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 27 to 32. Highs 47 to 52. South winds around 10 mph. .SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the mid 20s. Highs 42 to 47. $$ WYZ276-302300- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....41-46. 24 hr trend......6 degrees warmer. Min humidity........45-51 percent. 24 hr trend......8 percent wetter. 20-foot winds.......West winds around 10 mph until 0900, then upslope/upvalley 5-9 mph until 1200, then southeast around 10 mph until 1500, then south. Gusts up to 15 mph. Ridge top winds.....Southwest 10 to 15 mph until 1200, then south until 1300, then southeast until 1600, then southwest. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph until 1400, then south. Mixing Height.......400-1400 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....28-33. 24 hr trend......6 degrees warmer. Max humidity........53-59 percent. 24 hr trend......7 percent drier. Humidity recovery...Moderate. 20-foot winds.......Southwest winds 10 to 15 mph and gusty. Ridge top winds.....Southwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......400-1000 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....47-52. 24 hr trend......7 degrees warmer. Min humidity........43-49 percent. 24 hr trend......3 percent drier. 20-foot winds.......Southwest winds 10 to 15 mph with higher gusts. Ridge top winds.....Southwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 15 mph. Mixing Height.......400-1200 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Lows in the lower 30s. Southwest winds around 10 mph. .NEW YEARS DAY...Mostly cloudy. Lows in the lower 30s. Highs in the upper 40s. Southwest winds around 10 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 30 to 35. Highs around 50. Southwest winds around 10 mph. .SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the mid 20s. Highs in the mid 40s. $$ WYZ287-302300- Owl Creek Mountains- 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....34-39. 24 hr trend......4 degrees warmer. Min humidity........43-49 percent. 24 hr trend......9 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then south around 10 mph. Ridge top winds.....Southwest around 10 mph until 1300, then south. Chc of wetting rain.Zero percent. Transport winds.....South 10 to 15 mph. Mixing Height.......200-1200 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....25-30. 24 hr trend......5 degrees warmer. Max humidity........55-61 percent. 24 hr trend......1 percent drier. Humidity recovery...Moderate. 20-foot winds.......Southwest winds around 10 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......200-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....41-46. 24 hr trend......6 degrees warmer. Min humidity........45-51 percent. 24 hr trend......1 percent drier. 20-foot winds.......Southwest winds around 10 mph until 1200, then upslope/upvalley 5-9 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......200-600 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 30s. Winds generally less than 10 mph. .NEW YEARS DAY...Mostly cloudy. Lows in the lower 30s. Highs in the mid 40s. Winds generally less than 10 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 28 to 33. Highs in the mid 40s. Southwest winds around 10 mph. .SUNDAY...Partly cloudy. Lows in the mid 20s. Highs in the lower 40s. .MONDAY...Mostly sunny. Highs in the upper 30s. $$ WYZ286-302300- Absaroka Mountains/North Shoshone NF- Including the city of Pahaska 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....33-38. 24 hr trend......4 degrees warmer. Min humidity........52-58 percent. 24 hr trend......4 percent wetter. 20-foot winds.......West winds 10 to 15 mph with higher gusts. Ridge top winds.....West 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......400-1800 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....22-27. 24 hr trend......6 degrees warmer. Max humidity........58-64 percent. 24 hr trend......9 percent drier. Humidity recovery...Good. 20-foot winds.......West winds around 15 mph and gusty. Ridge top winds.....West around 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 20 mph. Mixing Height.......400-1000 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....39-44. 24 hr trend......5 degrees warmer. Min humidity........49-55 percent. 24 hr trend......6 percent drier. 20-foot winds.......West winds around 15 mph with higher gusts. Ridge top winds.....West 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......400-1400 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 20s. West winds around 15 mph. .NEW YEARS DAY...Mostly cloudy with chance of snow showers. Lows in the upper 20s. Highs in the upper 30s. West winds around 10 mph. .FRIDAY...Mostly cloudy with slight chance of snow showers. Lows in the upper 20s. Highs in the upper 30s. West winds around 15 mph. .SATURDAY...Partly cloudy with chance of snow showers. Lows in the lower 20s. Highs in the mid 30s. West winds around 15 mph. .SUNDAY...Partly cloudy with chance of snow showers. Lows around 19. Highs in the lower 30s. .MONDAY...Partly cloudy. Slight chance of snow showers in the afternoon. Highs around 30. $$ WYZ140-302300- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....30-35. 24 hr trend......6 degrees warmer. Min humidity........53-59 percent. 24 hr trend......7 percent drier. 20-foot winds.......Upslope/upvalley 5-9 mph. Ridge top winds.....Southwest around 10 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......200-1600 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....12-17. 24 hr trend......5 degrees warmer. Max humidity........71-77 percent. 24 hr trend......15 percent drier. Humidity recovery...Excellent. 20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then south around 10 mph until 2400, then downslope/downvalley 4-7 mph. Ridge top winds.....South 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......200-800 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....34-39. 24 hr trend......5 degrees warmer. Min humidity........51-57 percent. 24 hr trend......2 percent drier. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then southwest around 10 mph until 1500, then upslope/upvalley 5-9 mph. Ridge top winds.....South 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......200-1400 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows around 18. Winds generally less than 10 mph. .NEW YEARS DAY THROUGH SATURDAY...Cloudy with chance of snow showers. Lows 22 to 27. Highs 30 to 35. Southwest winds around 10 mph. .SUNDAY...Mostly cloudy with chance of snow showers. Lows around 17. Highs in the upper 20s. .MONDAY...Mostly cloudy with slight chance of snow showers. Highs in the upper 20s. $$ WYZ415-302300- North Zone Bridger Teton NF and Grand Teton NP- Including the cities of Jackson and Moran 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....30-35. 24 hr trend......7 degrees warmer. Min humidity........54-60 percent. 24 hr trend......2 percent drier. 20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph until 0900. Ridge top winds.....Northwest around 10 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 10 mph. Mixing Height.......400-1600 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....13-18. 24 hr trend......7 degrees warmer. Max humidity........65-71 percent. 24 hr trend......14 percent drier. Humidity recovery...Good. 20-foot winds.......Downslope/downvalley 4-7 mph. Ridge top winds.....Northwest around 10 mph until 1900, then south. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 10 mph. Mixing Height.......400-1000 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Max temperature.....35-40. 24 hr trend......5 degrees warmer. Min humidity........53-59 percent. 24 hr trend......Unchanged. 20-foot winds.......Upslope/upvalley 5-9 mph. Ridge top winds.....East around 10 mph until 1000, then southwest. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 10 mph. Mixing Height.......400-1400 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Lows in the lower 20s. Winds generally less than 10 mph. .NEW YEARS DAY...Snow showers and showers. Lows in the mid 20s. Highs in the lower 30s. Winds generally less than 10 mph. .FRIDAY...Cloudy with snow showers and showers likely. Lows in the upper 20s. Highs in the mid 30s. Winds generally less than 10 mph. .SATURDAY...Snow showers and showers likely. Lows around 20. Highs in the mid 30s. Southwest winds around 10 mph. .SUNDAY...Mostly cloudy with snow showers likely. Lows around 16. Highs in the upper 20s. .MONDAY...Mostly cloudy with chance of snow showers. Highs in the upper 20s. $$ WYZ416-302300- West Wind River Mountains/East Zone Bridger Teton NF- 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....32-37. 24 hr trend......6 degrees warmer. Min humidity........52-58 percent. 24 hr trend......6 percent wetter. 20-foot winds.......Northwest winds around 10 mph until 1500, then upslope/upvalley 5-9 mph. Gusts up to 15 mph. Ridge top winds.....Northwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......200-1400 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Clear. Chance of thunder...0 percent. Min temperature.....17-22. 24 hr trend......7 degrees warmer. Max humidity........64-70 percent. 24 hr trend......20 percent drier. Humidity recovery...Good. 20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then north around 10 mph. Gusts up to 15 mph. Ridge top winds.....North 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......200-800 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Max temperature.....36-41. 24 hr trend......4 degrees warmer. Min humidity........52-58 percent. 24 hr trend......4 percent drier. 20-foot winds.......North winds around 10 mph until 0900, then upslope/upvalley 5-9 mph until 1200, then west around 10 mph until 1500, then upslope/upvalley 5-9 mph. Ridge top winds.....Northwest 10 to 15 mph until 1200, then west. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph until 1400, then west. Mixing Height.......200-1200 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Lows in the lower 20s. Winds generally less than 10 mph. .NEW YEARS DAY THROUGH FRIDAY...Cloudy with chance of snow showers. Lows in the mid 20s. Highs in the lower 30s. West winds around 10 mph. .SATURDAY...Mostly cloudy with chance of snow showers. Lows around 18. Highs in the lower 30s. Southwest winds around 10 mph. .SUNDAY...Mostly cloudy with chance of snow showers. Lows around 13. Highs in the upper 20s. .MONDAY...Mostly cloudy with slight chance of snow showers. Highs in the mid 20s. $$ WYZ288-302300- East Wind River Mountains/South Shoshone NF- Including the cities of Dubois and South Pass 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....34-39. 24 hr trend......5 degrees warmer. Min humidity........48-54 percent. 24 hr trend......3 percent wetter. 20-foot winds.......West winds 10 to 15 mph with higher gusts. Ridge top winds.....West 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......200-1400 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....21-26. 24 hr trend......6 degrees warmer. Max humidity........58-64 percent. 24 hr trend......18 percent drier. Humidity recovery...Good. 20-foot winds.......West winds 10 to 15 mph and gusty. Ridge top winds.....West 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......200-800 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Max temperature.....39-44. 24 hr trend......5 degrees warmer. Min humidity........47-53 percent. 24 hr trend......2 percent drier. 20-foot winds.......West winds 10 to 15 mph with higher gusts. Ridge top winds.....West 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......200-1000 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Lows in the upper 20s. West winds around 10 mph. .NEW YEARS DAY...Mostly cloudy with chance of snow showers and showers. Lows in the upper 20s. Highs in the upper 30s. West winds around 15 mph. .FRIDAY...Mostly cloudy with chance of snow showers. Lows in the upper 20s. Highs in the upper 30s. West winds around 15 mph. .SATURDAY...Partly cloudy with chance of snow showers. Lows in the lower 20s. Highs in the mid 30s. West winds around 15 mph. .SUNDAY...Partly cloudy with chance of snow showers. Lows around 19. Highs in the lower 30s. .MONDAY...Partly cloudy with slight chance of snow showers. Highs around 30. $$ WYZ414-302300- Salt and Wyoming Ranges/West Zone Bridger Teton NF- Including the city of Afton 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Mostly sunny then becoming partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....30-35. 24 hr trend......10 degrees warmer. Min humidity........46-52 percent. 24 hr trend......8 percent drier. 20-foot winds.......West winds around 10 mph until 0900, then upslope/upvalley 5-9 mph. Ridge top winds.....West 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West 10 to 15 mph. Mixing Height.......200-1200 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....15-20. 24 hr trend......7 degrees warmer. Max humidity........61-67 percent. 24 hr trend......18 percent drier. Humidity recovery...Good. 20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then southwest around 10 mph until 2400, then downslope/downvalley 4-7 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West 10 to 15 mph. Mixing Height.......200-800 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Max temperature.....36-41. 24 hr trend......6 degrees warmer. Min humidity........48-54 percent. 24 hr trend......2 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph until 1500. Ridge top winds.....Southwest around 10 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 10 mph. Mixing Height.......200-1200 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Slight chance of snow showers after midnight. Lows in the mid 20s. Winds generally less than 10 mph. .NEW YEARS DAY...Snow showers and showers. Lows in the upper 20s. Highs in the mid 30s. Winds generally less than 10 mph. .FRIDAY...Cloudy with snow showers likely and showers. Lows in the upper 20s. Highs in the mid 30s. Winds generally less than 10 mph. .SATURDAY...Snow showers and showers likely. Lows in the lower 20s. Highs in the mid 30s. Southwest winds around 10 mph. .SUNDAY...Mostly cloudy with snow showers likely. Lows around 17. Highs in the lower 30s. .MONDAY...Mostly cloudy with chance of snow showers. Highs around 30. $$ WYZ278-302300- Upper Green River Basin/Rock Springs BLM- Including the cities of Big Piney, Farson, and Pinedale 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Mostly sunny then becoming partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....34-39. 24 hr trend......2 degrees warmer. Min humidity........46-52 percent. 24 hr trend......2 percent wetter. 20-foot winds.......Northwest winds around 10 mph until 0900, then upslope/upvalley 5-9 mph until 1200, then west around 10 mph until 1500, then upslope/upvalley 5-9 mph. Ridge top winds.....West 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......400-1200 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Min temperature.....15-20. 24 hr trend......5 degrees warmer. Max humidity........64-70 percent. 24 hr trend......4 percent drier. Humidity recovery...Good. 20-foot winds.......Downslope/downvalley 4-7 mph. Ridge top winds.....Northwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......400-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Max temperature.....38-43. 24 hr trend......3 degrees warmer. Min humidity........49-55 percent. 24 hr trend......4 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph until 0900. Ridge top winds.....West around 10 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 10 mph. Mixing Height.......200-800 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Lows in the lower 20s. Winds generally less than 10 mph. .NEW YEARS DAY...Cloudy with chance of snow showers and showers. Lows in the mid 20s. Highs in the upper 30s. Winds generally less than 10 mph. .FRIDAY THROUGH SATURDAY...Mostly cloudy with chance of snow showers. Lows 20 to 25. Highs in the lower 40s. Winds generally less than 10 mph. .SUNDAY...Mostly cloudy. Chance of snow showers. Lows around 15. Highs in the mid 30s. .MONDAY...Partly cloudy. Slight chance of snow showers in the afternoon. Highs in the lower 30s. $$ WYZ277-302300- Lincoln and Uinta Counties/Lower Elevations- Including the cities of Evanston, Fort Bridger, and Kemmerer 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Mostly sunny. Chance of thunder...0 percent. Max temperature.....32-37. 24 hr trend......8 degrees warmer. Min humidity........44-50 percent. 24 hr trend......3 percent drier. 20-foot winds.......Northwest winds around 10 mph until 0900, then upslope/upvalley 5-9 mph until 1500, then west around 10 mph. Ridge top winds.....West 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West 10 to 15 mph. Mixing Height.......200-1200 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Min temperature.....18-23. 24 hr trend......6 degrees warmer. Max humidity........61-67 percent. 24 hr trend......7 percent drier. Humidity recovery...Good. 20-foot winds.......Northwest winds around 10 mph until 2100, then downslope/downvalley 4-7 mph. Ridge top winds.....Northwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......200-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Max temperature.....36-41. 24 hr trend......5 degrees warmer. Min humidity........45-51 percent. 24 hr trend......2 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph. Ridge top winds.....Northwest around 10 mph until 1100, then west. Chc of wetting rain.Zero percent. Transport winds.....West 5 to 10 mph. Mixing Height.......200-800 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Lows in the mid 20s. Winds generally less than 10 mph. .NEW YEARS DAY...Cloudy with snow showers likely and chance of showers. Lows in the lower 30s. Highs in the upper 30s. Winds generally less than 10 mph. .FRIDAY...Mostly cloudy with slight chance of showers and snow showers. Lows in the upper 20s. Highs in the lower 40s. Southwest winds around 10 mph. .SATURDAY...Mostly cloudy. Chance of snow showers and slight chance of showers. Lows in the mid 20s. Highs around 40. Southwest winds around 10 mph. .SUNDAY...Mostly cloudy. Chance of snow showers. Lows around 19. Highs in the mid 30s. .MONDAY...Mostly cloudy with slight chance of snow showers. Highs in the lower 30s. $$ WYZ279-302300- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Including the cities of Green River, Rock Springs, and Wamsutter 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Mostly sunny. Chance of thunder...0 percent. Max temperature.....37-42. 24 hr trend......4 degrees warmer. Min humidity........34-40 percent. 24 hr trend......3 percent drier. 20-foot winds.......Southwest winds around 10 mph and gusty. Ridge top winds.....Southwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 15 mph. Mixing Height.......400-1600 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Min temperature.....20-25. 24 hr trend......4 degrees warmer. Max humidity........58-64 percent. 24 hr trend......5 percent drier. Humidity recovery...Good. 20-foot winds.......Southwest winds around 10 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 15 mph. Mixing Height.......400-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Max temperature.....40-45. 24 hr trend......4 degrees warmer. Min humidity........37-43 percent. 24 hr trend......2 percent wetter. 20-foot winds.......Southwest winds around 10 mph and gusty. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 15 mph. Mixing Height.......200-1000 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Lows in the mid 20s. Winds generally less than 10 mph. .NEW YEARS DAY...Cloudy with chance of showers and slight chance of snow showers. Lows around 30. Highs around 40. Southwest winds around 10 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 25 to 30. Highs in the mid 40s. Southwest winds around 10 mph. .SUNDAY...Partly cloudy. Slight chance of snow showers. Lows in the lower 20s. Highs around 40. .MONDAY...Partly cloudy. Highs in the upper 30s. $$ WYZ289-302300- Granite/Green/Ferris/Rattlesnake Mountains- Including the city of Jeffrey City 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Mostly sunny then becoming partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....33-38. 24 hr trend......5 degrees warmer. Min humidity........40-46 percent. 24 hr trend......5 percent drier. 20-foot winds.......Southwest winds 10 to 15 mph with higher gusts. Ridge top winds.....Southwest 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......400-1400 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....22-27. 24 hr trend......4 degrees warmer. Max humidity........58-64 percent. 24 hr trend......8 percent drier. Humidity recovery...Good. 20-foot winds.......Southwest winds 10 to 15 mph and gusty. Ridge top winds.....Southwest 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......400-600 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Max temperature.....38-43. 24 hr trend......5 degrees warmer. Min humidity........39-45 percent. 24 hr trend......1 percent drier. 20-foot winds.......Southwest winds 10 to 15 mph with higher gusts. Ridge top winds.....Southwest 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......200-1000 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly cloudy. Lows in the upper 20s. Southwest winds around 10 mph. .NEW YEARS DAY...Mostly cloudy with chance of snow showers and slight chance of showers. Lows in the lower 30s. Highs in the lower 40s. Southwest winds around 15 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 26 to 31. Highs in the mid 40s. Southwest winds around 15 mph. .SUNDAY...Partly cloudy. Slight chance of snow showers. Lows in the lower 20s. Highs in the lower 40s. .MONDAY...Mostly sunny. Highs in the upper 30s. $$ WYZ300-302300- Casper Mountain- 501 AM MST Tue Dec 30 2025 .TODAY... Sky/weather.........Mostly sunny then becoming partly cloudy then becoming mostly sunny. Chance of thunder...0 percent. Max temperature.....33-38. 24 hr trend......8 degrees warmer. Min humidity........42-48 percent. 24 hr trend......6 percent drier. 20-foot winds.......Southwest winds 10 to 15 mph with higher gusts. Ridge top winds.....Southwest 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......200-1200 ft agl. Smoke dispersal.....Poor. .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....24-29. 24 hr trend......6 degrees warmer. Max humidity........49-55 percent. 24 hr trend......10 percent drier. Humidity recovery...Moderate. 20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 20 mph until 2400, then 25 mph. Ridge top winds.....Southwest 15 to 20 mph until 0400, then around 25 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......200-400 ft agl. Smoke dispersal.....Poor. .WEDNESDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of thunder...0 percent. Max temperature.....40-45. 24 hr trend......7 degrees warmer. Min humidity........39-45 percent. 24 hr trend......6 percent drier. 20-foot winds.......Southwest winds 15 to 20 mph with gusts to around 25 mph. Ridge top winds.....Southwest 20 to 25 mph until 1700, then around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest 20 to 25 mph. Mixing Height.......200-1000 ft agl. Smoke dispersal.....Poor. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows around 30. Southwest winds around 10 mph. .NEW YEARS DAY...Mostly cloudy. Lows in the lower 30s. Highs in the lower 40s. Southwest winds around 15 mph. .FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 29 to 34. Highs in the mid 40s. Southwest winds 15 to 20 mph. .SUNDAY...Partly cloudy. Lows in the mid 20s. Highs around 40. .MONDAY...Mostly sunny. Highs in the upper 30s. $$