


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
698 FNUS55 KRIW 201840 FWFRIW Fire Weather Planning Forecast for Western and Central Wyoming National Weather Service Riverton WY 1240 PM MDT Wed Aug 20 2025 .DISCUSSION... ...Yellowstone NP and Teton dispatch areas (includes fire weather zones 140...414...415...and 416)... Scattered virga showers and isolated dry lightning will remain a threat this afternoon and evening, with these showers slowly sliding south overnight. Today remains very dry, with RH dropping to 10-20% in all zones. RH recovery will be better tonight than last night, but still not all that great around 40% at the higher elevations. A west/southwest wind 10-20 mph this afternoon will fade this evening becoming light overnight. Smoke dispersal will be very good to excellent this afternoon and each afternoon through at least Friday. ...Cody dispatch area (includes fire weather zones 275...276... 282...283...285...286...287...288...and 289)... Scattered virga showers and isolated dry lightning will remain a threat this afternoon and evening, mainly across northern zones. These showers slowly slide south and east overnight. Today remains very dry, with RH dropping below 10% at lower elevations and 10-20% at higher elevations. RH recovery will be better tonight than last night, but still not all that great around 40-50% on average. Wind will become more northwesterly tonight around 10 mph. Smoke dispersal will be very good to excellent this afternoon. ...Casper dispatch area (includes fire weather zones 277...278... 279...280...281...285...289...and 300)... Scattered virga showers and isolated dry lightning will remain a threat this afternoon and evening, mainly across western zones. These showers slowly slide south and east overnight. Today remains very dry, with RH dropping below 10% at lower elevations and 10-20% at higher elevations. RH recovery will be better tonight than last night, but still not all that great around 40-50% on average. Wind will become more northerly tonight around 10 mph. Smoke dispersal will be very good to excellent this afternoon. ...Thunderstorms imply strong gusty and erratic winds... WYZ280-212045- Natrona County/Casper BLM- Including the cities of Casper and Midwest 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Min temperature.....60-65. 24 hr trend......1 degree warmer. Max humidity........48-54 percent. 24 hr trend......9 percent drier. Humidity recovery...Moderate. 20-foot winds.......Northeast winds around 10 mph until 2400, then northwest until 0300, then downslope/downvalley 4-7 mph. Gusts up to 20 mph. Ridge top winds.....Northeast around 15 mph until 2400, then west. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......7000-9000 ft agl until 2400, then 600-800 ft agl. Smoke dispersal.....Good to very good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....82-87. 24 hr trend......10 degrees cooler. Min humidity........28-34 percent. 24 hr trend......19 percent wetter. 20-foot winds.......Northwest winds around 10 mph until 0900, then northeast. Gusts up to 25 mph. Ridge top winds.....North 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....North 15 to 20 mph. Mixing Height.......1200-3200 ft agl until 1200, then 5200-7200 ft agl. Smoke dispersal.....Poor to fair until 1200, then good to very good. .THURSDAY NIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Haze in the evening. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms in the late evening and overnight. Chance of precipitation 50 percent. Chance of thunder...40 percent. Min temperature.....56-61. 24 hr trend......4 degrees cooler. Max humidity........78-84 percent. 24 hr trend......31 percent wetter. Humidity recovery...Excellent. 20-foot winds.......Northeast winds 10 to 15 mph with gusts to around 25 mph. Ridge top winds.....Northeast around 15 mph. Chc of wetting rain.Less than 5 percent. Transport winds.....Northeast around 15 mph. Mixing Height.......2600-4600 ft agl until 2400, then 600-800 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy. Slight chance of showers in the morning, then chance of showers and thunderstorms in the afternoon. Chance of precipitation 40 percent. Chance of thunder...30 percent. Max temperature.....77-82. 24 hr trend......8 degrees cooler. Min humidity........41-47 percent. 24 hr trend......14 percent wetter. 20-foot winds.......Northeast winds 10 to 15 mph. Gusts up to 15 mph until 1200, then 30 mph. Ridge top winds.....Northeast around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northeast around 15 mph. Mixing Height.......1200-3200 ft agl until 1200, then 4600-6600 ft agl. Smoke dispersal.....Fair to good. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Chance of showers and thunderstorms in the evening, then slight chance of showers and thunderstorms after midnight. Lows in the mid 50s. Northeast winds around 10 mph. .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. Northeast winds around 10 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. Northeast winds around 10 mph. .MONDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs 74 to 79. $$ WYZ283-212045- Upper Wind River Basin/Wind River Basin- Including the cities of Crowheart, Lander, Riverton, and Shoshoni 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Areas of smoke early in the evening. Chance of thunder...10 percent. Min temperature.....59-64. 24 hr trend......5 degrees warmer. Max humidity........45-51 percent. 24 hr trend......4 percent wetter. Humidity recovery...Moderate. 20-foot winds.......North winds 10 to 15 mph with gusts to around 25 mph until 2400, then west with gusts to around 15 mph. Ridge top winds.....Northwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph. Mixing Height.......5800-7800 ft agl until 2400, then 600-800 ft agl. Smoke dispersal.....Good to very good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....83-88. 24 hr trend......8 degrees cooler. Min humidity........23-29 percent. 24 hr trend......15 percent wetter. 20-foot winds.......Northwest winds around 10 mph until 0900, then east. Gusts up to 25 mph. Ridge top winds.....North around 15 mph until 1200, then east. Chc of wetting rain.Zero percent. Transport winds.....Northeast around 15 mph until 1200, then southwest. Mixing Height.......1200-3200 ft agl until 1200, then 5800-7800 ft agl. Smoke dispersal.....Poor until 1200, then good. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Slight chance of showers and thunderstorms in the evening. Areas of smoke. Haze in the late evening and overnight. Chance of precipitation 20 percent. Chance of thunder...20 percent. Min temperature.....52-57. 24 hr trend......5 degrees cooler. Max humidity........71-77 percent. 24 hr trend......27 percent wetter. Humidity recovery...Excellent. 20-foot winds.......Northeast winds around 10 mph until 0300, then downslope/downvalley 4-7 mph. Gusts up to 25 mph. Ridge top winds.....East around 15 mph until 2400, then north. Chc of wetting rain.Zero percent. Transport winds.....Northeast 10 to 15 mph. Mixing Height.......2000-4000 ft agl until 2400, then 600-800 ft agl. Smoke dispersal.....Poor. .FRIDAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Haze early in the morning. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....78-83. 24 hr trend......5 degrees cooler. Min humidity........32-38 percent. 24 hr trend......11 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then northeast around 10 mph. Gusts up to 20 mph. Ridge top winds.....Northeast 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northeast 10 to 15 mph. Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft agl. Smoke dispersal.....Poor until 1200, then good. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening. Lows in the mid 50s. Northeast winds around 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the lower 80s. East winds around 10 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs around 80. Winds generally less than 10 mph. .MONDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. Winds generally less than 10 mph. .TUESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the mid 70s. .WEDNESDAY...Mostly cloudy. Slight chance of showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Highs in the mid 70s. $$ WYZ285-212045- South Bighorn Mountains- 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Areas of smoke early in the evening. Haze early in the evening. Chance of thunder...0 percent. Min temperature.....58-63. 24 hr trend......1 degree cooler. Max humidity........44-50 percent. 24 hr trend......1 percent wetter. Humidity recovery...Moderate. 20-foot winds.......Northwest winds around 10 mph with gusts to around 25 mph. Ridge top winds.....Northwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......4400-6400 ft agl until 2400, then 200-600 ft agl. Smoke dispersal.....Good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Haze and areas of smoke through the day. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....77-82. 24 hr trend......10 degrees cooler. Min humidity........28-34 percent. 24 hr trend......21 percent wetter. 20-foot winds.......Northwest winds around 10 mph until 1200, then northeast. Gusts up to 20 mph. Ridge top winds.....Northwest around 15 mph until 1200, then east. Chc of wetting rain.Less than 5 percent. Transport winds.....Northwest around 15 mph until 1200, then west. Mixing Height.......800-2800 ft agl until 1200, then 4600-6600 ft agl. Smoke dispersal.....Poor to fair. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Haze and areas of smoke through the night. Chance of showers and thunderstorms in the evening. Slight chance of showers and thunderstorms after midnight. Chance of precipitation 50 percent. Chance of thunder...40 percent. Min temperature.....53-58. 24 hr trend......6 degrees cooler. Max humidity........71-77 percent. 24 hr trend......32 percent wetter. Humidity recovery...Excellent. 20-foot winds.......Northeast winds 10 to 15 mph with gusts to around 25 mph. Ridge top winds.....Northeast around 15 mph. Chc of wetting rain.Less than 5 percent. Transport winds.....Northeast around 15 mph. Mixing Height.......1400-3400 ft agl until 2400, then 200-600 ft agl. Smoke dispersal.....Poor. .FRIDAY... Sky/weather.........Partly cloudy. Haze and areas of smoke early in the morning. Slight chance of showers and thunderstorms in the morning, then chance of showers and thunderstorms in the afternoon. Chance of precipitation 50 percent. Chance of thunder...30 percent. Max temperature.....70-75. 24 hr trend......8 degrees cooler. Min humidity........44-50 percent. 24 hr trend......14 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then northeast 10 to 15 mph with gusts to around 25 mph. Ridge top winds.....Northeast around 15 mph. Chc of wetting rain.Less than 5 percent. Transport winds.....North around 15 mph. Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft agl. Smoke dispersal.....Poor to fair. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Chance of showers and slight chance of thunderstorms in the evening. Lows in the lower 50s. Northeast winds around 10 mph. .SATURDAY...Mostly clear. Lows in the lower 50s. Highs in the lower 70s. East winds around 10 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs around 70. Northeast winds around 10 mph. .MONDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows around 50. Highs around 70. Northeast winds around 10 mph. .TUESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the upper 60s. .WEDNESDAY...Partly cloudy. Slight chance of showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Highs around 70. $$ WYZ281-212045- Johnson County/Casper BLM- Including the cities of Buffalo and Kaycee 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Areas of smoke early in the evening. Chance of thunder...0 percent. Min temperature.....61-66. 24 hr trend......Unchanged. Max humidity........51-57 percent. 24 hr trend......4 percent drier. Humidity recovery...Moderate. 20-foot winds.......Northwest winds around 10 mph with gusts to around 25 mph. Ridge top winds.....Northwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......5000-7000 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....78-83. 24 hr trend......14 degrees cooler. Min humidity........35-41 percent. 24 hr trend......22 percent wetter. 20-foot winds.......North winds 15 to 20 mph. Gusts up to 35 mph until 1200, then 25 mph. Ridge top winds.....North around 20 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 20 mph. Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft agl. Smoke dispersal.....Poor to fair until 1200, then good to very good. .THURSDAY NIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Haze early in the evening. Chance of thunderstorms in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Chance of precipitation 50 percent. Chance of thunder...40 percent. Min temperature.....53-58. 24 hr trend......5 degrees cooler. Max humidity........80-86 percent. 24 hr trend......26 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North winds around 10 mph until 0300, then downslope/downvalley 4-7 mph. Gusts up to 20 mph. Ridge top winds.....North around 15 mph. Chc of wetting rain.5 percent until 2400, then 15 percent. Transport winds.....Northeast around 15 mph. Mixing Height.......2000-4000 ft agl until 2400, then 600-1000 ft agl. Smoke dispersal.....Poor. .FRIDAY... Sky/weather.........Partly cloudy. Slight chance of thunderstorms until late afternoon. Chance of showers through the day. Chance of thunderstorms late in the afternoon. Chance of precipitation 50 percent. Chance of thunder...30 percent. Max temperature.....70-75. 24 hr trend......8 degrees cooler. Min humidity........47-53 percent. 24 hr trend......15 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then northeast around 10 mph. Gusts up to 20 mph. Ridge top winds.....Northeast 10 to 15 mph. Chc of wetting rain.Less than 5 percent. Transport winds.....Northeast 10 to 15 mph. Mixing Height.......1200-3200 ft agl until 1200, then 4400-5800 ft agl. Smoke dispersal.....Poor to fair. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Chance of showers and slight chance of thunderstorms in the evening, then slight chance of showers after midnight. Lows in the mid 50s. North winds around 10 mph. .SATURDAY...Mostly clear. Lows in the lower 50s. Highs in the upper 70s. Winds generally less than 10 mph. .SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the lower 50s. Highs 76 to 81. $$ WYZ282-212045- South Bighorn Basin/Worland BLM- Including the cities of Ten Sleep, Thermopolis, and Worland 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms early in the evening. Some thunderstorms may produce gusty winds early in the evening. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....56-61. 24 hr trend......1 degree warmer. Max humidity........46-52 percent. 24 hr trend......10 percent wetter. Humidity recovery...Moderate. 20-foot winds.......Northwest winds 10 to 15 mph with gusts to around 25 mph until 2400, then downslope/downvalley 4-7 mph until 0300, then west around 10 mph with gusts to around 15 mph. Ridge top winds.....North around 15 mph until 2400, then west. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......3000-5000 ft agl until 2400, then 600-800 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the afternoon. Areas of smoke late in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....79-84. 24 hr trend......10 degrees cooler. Min humidity........25-31 percent. 24 hr trend......15 percent wetter. 20-foot winds.......Northwest winds around 10 mph with gusts to around 25 mph until 1500, then north and gusty. Ridge top winds.....Northwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......1200-3200 ft agl until 1200, then 4600-6600 ft agl. Smoke dispersal.....Poor to fair. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Areas of smoke in the evening. Slight chance of thunderstorms until early morning. Slight chance of showers through the night. Chance of precipitation 20 percent. Chance of thunder...20 percent. Min temperature.....52-57. 24 hr trend......5 degrees cooler. Max humidity........71-77 percent. 24 hr trend......18 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North winds around 10 mph until 0300, then northwest. Gusts up to 15 mph. Ridge top winds.....North around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northeast around 15 mph until 2400, then northwest. Mixing Height.......2000-4000 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Poor. .FRIDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Chance of showers and slight chance of thunderstorms in the afternoon. Chance of precipitation 30 percent. Chance of thunder...20 percent. Max temperature.....74-79. 24 hr trend......5 degrees cooler. Min humidity........35-41 percent. 24 hr trend......7 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north around 10 mph. Gusts up to 20 mph. Ridge top winds.....Northwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......1200-3200 ft agl until 1200, then 4400-6400 ft agl. Smoke dispersal.....Poor to fair. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening. Lows in the mid 50s. North winds around 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the lower 80s. Winds generally less than 10 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the lower 80s. Winds generally less than 10 mph. .MONDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs around 80. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the mid 50s. Highs around 80. $$ WYZ275-212045- North Bighorn Basin/Worland BLM- Including the cities of Greybull, Lovell, and Powell 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Isolated thunderstorms early in the evening. Isolated showers in the evening. Some thunderstorms may produce gusty winds early in the evening. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....55-60. 24 hr trend......Unchanged. Max humidity........48-54 percent. 24 hr trend......16 percent wetter. Humidity recovery...Moderate. 20-foot winds.......Northwest winds 10 to 15 mph with gusts to around 25 mph. Ridge top winds.....Northwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph. Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms late in the afternoon. Some thunderstorms may produce gusty winds late in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....77-82. 24 hr trend......9 degrees cooler. Min humidity........28-34 percent. 24 hr trend......15 percent wetter. 20-foot winds.......Northwest winds 10 to 15 mph with gusts to around 30 mph. Ridge top winds.....Northwest 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 15 to 20 mph. Mixing Height.......1200-3200 ft agl until 1200, then 4400-6400 ft agl. Smoke dispersal.....Fair to good. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Slight chance of thunderstorms in the evening. Slight chance of showers through the night. Haze early in the evening. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....51-56. 24 hr trend......4 degrees cooler. Max humidity........72-78 percent. 24 hr trend......13 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North winds around 10 mph. Gusts up to 25 mph until 2400, then 15 mph. Ridge top winds.....North around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Poor to fair. .FRIDAY... Sky/weather.........Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....73-78. 24 hr trend......5 degrees cooler. Min humidity........34-40 percent. 24 hr trend......6 percent wetter. 20-foot winds.......Northwest winds 10 to 15 mph with gusts to around 25 mph. Ridge top winds.....Northwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph. Mixing Height.......1000-3000 ft agl until 1200, then 4200-6200 ft agl. Smoke dispersal.....Poor to fair. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly clear. Slight chance of showers and thunderstorms in the evening. Lows in the mid 50s. North winds around 10 mph. .SATURDAY...Mostly clear. Lows in the mid 50s. Highs in the lower 80s. Winds generally less than 10 mph. .SUNDAY...Partly cloudy. Lows in the mid 50s. Highs in the lower 80s. Winds generally less than 10 mph. .MONDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the lower 50s. Highs around 80. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the lower 80s. $$ WYZ276-212045- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Isolated thunderstorms early in the evening. Isolated showers early in the evening. Some thunderstorms may produce gusty winds early in the evening. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....55-60. 24 hr trend......4 degrees cooler. Max humidity........53-59 percent. 24 hr trend......23 percent wetter. Humidity recovery...Moderate. 20-foot winds.......West winds 10 to 15 mph with gusts to around 25 mph. Ridge top winds.....West around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 15 mph. Mixing Height.......2400-4400 ft agl until 2400, then 600-1000 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .THURSDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....76-81. 24 hr trend......11 degrees cooler. Min humidity........32-38 percent. 24 hr trend......17 percent wetter. 20-foot winds.......North winds 10 to 15 mph until 1200, then around 15 mph. Gusts up to 30 mph. Ridge top winds.....North around 20 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 20 mph. Mixing Height.......1200-3200 ft agl until 1200, then 3800-5800 ft agl. Smoke dispersal.....Fair to good. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Slight chance of showers and thunderstorms early in the evening. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....51-56. 24 hr trend......4 degrees cooler. Max humidity........69-75 percent. 24 hr trend......15 percent wetter. Humidity recovery...Good. 20-foot winds.......North winds 10 to 15 mph until 2400, then northwest. Gusts up to 25 mph. Ridge top winds.....Northwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......2000-4000 ft agl until 2400, then 600-1000 ft agl. Smoke dispersal.....Poor to fair. .FRIDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....71-76. 24 hr trend......5 degrees cooler. Min humidity........40-46 percent. 24 hr trend......7 percent wetter. 20-foot winds.......North winds 10 to 15 mph with gusts to around 30 mph until 1500, then around 20 mph with gusts to around 30 mph. Ridge top winds.....North 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....North 15 to 20 mph. Mixing Height.......1200-3200 ft agl until 1200, then 3600-5000 ft agl. Smoke dispersal.....Fair to good. .Forecast days 3 through 7...... .FRIDAY THROUGH SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. North winds around 10 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds generally less than 10 mph. .MONDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the mid 70s. $$ WYZ287-212045- Owl Creek Mountains- 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms early in the evening. Some thunderstorms may produce gusty winds early in the evening. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....58-63. 24 hr trend......2 degrees cooler. Max humidity........45-51 percent. 24 hr trend......20 percent wetter. Humidity recovery...Moderate. 20-foot winds.......Northwest winds 10 to 15 mph until 2400, then around 10 mph. Gusts up to 25 mph. Ridge top winds.....Northwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph. Mixing Height.......2800-4800 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....76-81. 24 hr trend......11 degrees cooler. Min humidity........25-31 percent. 24 hr trend......16 percent wetter. 20-foot winds.......North winds around 15 mph with gusts to around 30 mph until 1200, then northeast with higher gusts. Ridge top winds.....North around 20 mph until 1200, then northeast. Chc of wetting rain.Less than 5 percent. Transport winds.....Northwest 15 to 20 mph. Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft agl. Smoke dispersal.....Poor to fair. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Slight chance of showers and thunderstorms in the evening. Haze early in the morning. Chance of precipitation 20 percent. Chance of thunder...20 percent. Min temperature.....53-58. 24 hr trend......5 degrees cooler. Max humidity........65-71 percent. 24 hr trend......20 percent wetter. Humidity recovery...Good. 20-foot winds.......North winds around 10 mph until 0300, then northwest. Gusts up to 20 mph. Ridge top winds.....North around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......1800-3800 ft agl until 2400, then 200-600 ft agl. Smoke dispersal.....Poor. .FRIDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Haze early in the morning. Slight chance of thunderstorms early in the afternoon. Chance of showers in the afternoon. Chance of thunderstorms late in the afternoon. Chance of precipitation 30 percent. Chance of thunder...30 percent. Max temperature.....71-76. 24 hr trend......5 degrees cooler. Min humidity........36-42 percent. 24 hr trend......9 percent wetter. 20-foot winds.......North winds around 10 mph until 0900, then upslope/upvalley 5-9 mph until 1200, then northeast around 10 mph. Gusts up to 20 mph. Ridge top winds.....North around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......1000-3000 ft agl until 1200, then 3600-5200 ft agl. Smoke dispersal.....Poor to fair. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening. Lows in the lower 50s. North winds around 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Northeast winds around 10 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds generally less than 10 mph. .MONDAY...Mostly cloudy with chance of showers and thunderstorms. Lows in the lower 50s. Highs in the lower 70s. Winds generally less than 10 mph. .TUESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the lower 70s. .WEDNESDAY...Mostly cloudy. Slight chance of showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. $$ WYZ286-212045- Absaroka Mountains/North Shoshone NF- Including the city of Pahaska 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Chance of thunder...10 percent. Min temperature.....48-53. 24 hr trend......1 degree cooler. Max humidity........60-66 percent. 24 hr trend......17 percent wetter. Humidity recovery...Good. 20-foot winds.......West winds 10 to 15 mph. Gusts up to 30 mph until 2400, then 20 mph. Ridge top winds.....West 15 to 20 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......2600-4600 ft agl until 2400, then 400-1200 ft agl. Smoke dispersal.....Good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Haze early in the afternoon. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....69-74. 24 hr trend......7 degrees cooler. Min humidity........30-36 percent. 24 hr trend......9 percent wetter. 20-foot winds.......West winds around 10 mph and gusty until 0900, then southeast with gusts to around 25 mph. Ridge top winds.....Southwest around 15 mph until 1200, then southeast. Chc of wetting rain.Zero percent. Transport winds.....Southwest 15 to 20 mph. Mixing Height.......2200-4200 ft agl until 1200, then 6400-8400 ft agl. Smoke dispersal.....Poor to fair until 1200, then very good. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Slight chance of showers and thunderstorms early in the evening. Haze early in the evening. Haze early in the morning. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....45-50. 24 hr trend......4 degrees cooler. Max humidity........77-83 percent. 24 hr trend......20 percent wetter. Humidity recovery...Excellent. 20-foot winds.......East winds around 10 mph until 2100, then downslope/downvalley 4-7 mph. Gusts up to 20 mph. Ridge top winds.....East 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....East around 15 mph until 2400, then southeast. Mixing Height.......2800-4800 ft agl until 2400, then 400-1000 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy. Haze early in the morning. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....66-71. 24 hr trend......4 degrees cooler. Min humidity........37-43 percent. 24 hr trend......7 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds northeast around 15 mph after 1500. Gusts up to 25 mph. Ridge top winds.....East around 10 mph until 1200, then northeast around 20 mph. Chc of wetting rain.Zero percent. Transport winds.....South around 10 mph until 1200, then west around 20 mph. Mixing Height.......2000-4000 ft agl until 1200, then 5200-7200 ft agl. Smoke dispersal.....Poor to fair until 1200, then good to very good. .Forecast days 3 through 7...... .FRIDAY THROUGH SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows in the mid 40s. Highs around 70. East winds around 10 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the upper 40s. Highs in the upper 60s. Winds generally less than 10 mph. .MONDAY...Mostly cloudy with chance of showers and thunderstorms. Lows in the mid 40s. Highs in the mid 60s. Winds generally less than 10 mph. .TUESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the mid 40s. Highs in the mid 60s. .WEDNESDAY...Mostly cloudy. Slight chance of showers in the morning, then chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. $$ WYZ140-212045- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms early in the evening. Haze after midnight. Some thunderstorms may produce gusty winds early in the evening. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....44-49. 24 hr trend......Unchanged. Max humidity........69-75 percent. 24 hr trend......14 percent wetter. Humidity recovery...Good. 20-foot winds.......Southwest winds 10 to 15 mph with gusts to around 25 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.....Southwest 10 to 15 mph. Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Haze through the day. Areas of smoke early in the morning. Chance of thunder...0 percent. Max temperature.....75-80. 24 hr trend......1 degree cooler. Min humidity........19-25 percent. 24 hr trend......2 percent drier. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west around 10 mph. Gusts up to 20 mph. Ridge top winds.....North around 10 mph until 1200, then west. Chc of wetting rain.Zero percent. Transport winds.....North around 10 mph until 1200, then west around 20 mph. Mixing Height.......2000-4000 ft agl until 1200, then 7800-9800 ft agl. Smoke dispersal.....Poor to fair until 1200, then very good to excellent. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Haze until early morning. Areas of smoke late in the evening. Chance of thunder...0 percent. Min temperature.....41-46. 24 hr trend......2 degrees cooler. Max humidity........73-79 percent. 24 hr trend......10 percent wetter. Humidity recovery...Excellent. 20-foot winds.......Northwest winds around 10 mph until 2100, then downslope/downvalley 4-7 mph. Gusts up to 20 mph. Ridge top winds.....North around 10 mph until 2400, then east. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph until 2400, then east. Mixing Height.......4000-6000 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....73-78. 24 hr trend......1 degree cooler. Min humidity........22-28 percent. 24 hr trend......2 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then northwest around 10 mph. Gusts up to 20 mph. Ridge top winds.....East around 10 mph until 1200, then west. Chc of wetting rain.Zero percent. Transport winds.....Southeast around 10 mph until 1200, then west. Mixing Height.......2200-4200 ft agl until 1200, then 7600-9600 ft agl. Smoke dispersal.....Poor to fair until 1200, then very good. .Forecast days 3 through 7...... .FRIDAY THROUGH SATURDAY...Mostly clear. Lows in the lower 40s. Highs in the mid 70s. Winds generally less than 10 mph. .SUNDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 40s. Highs in the mid 70s. Winds generally less than 10 mph. .MONDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows in the lower 40s. Highs in the upper 60s. Winds generally less than 10 mph. .TUESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 40s. Highs around 70. .WEDNESDAY...Mostly cloudy. Slight chance of showers in the morning, then chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. $$ WYZ415-212045- North Zone Bridger Teton NF and Grand Teton NP- Including the cities of Jackson and Moran 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms early in the evening. Some thunderstorms may produce gusty winds early in the evening. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....49-54. 24 hr trend......1 degree warmer. Max humidity........61-67 percent. 24 hr trend......13 percent wetter. Humidity recovery...Good. 20-foot winds.......West winds around 10 mph with gusts to around 25 mph until 2100, then downslope/downvalley 4-7 mph. Ridge top winds.....Southwest around 15 mph until 2400, then south. Chc of wetting rain.Zero percent. Transport winds.....Southwest 10 to 15 mph. Mixing Height.......2600-4600 ft agl until 2400, then 400-1000 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .THURSDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Haze in the afternoon. Isolated showers and thunderstorms late in the afternoon. Some thunderstorms may produce gusty winds late in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....76-81. 24 hr trend......1 degree cooler. Min humidity........19-25 percent. 24 hr trend......1 percent drier. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west 10 to 15 mph. Gusts up to 20 mph. Ridge top winds.....South around 10 mph until 1200, then west. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 10 mph until 1200, then west around 20 mph. Mixing Height.......2400-4400 ft agl until 1200, then 8600-10600 ft agl. Smoke dispersal.....Poor to fair until 1200, then excellent. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Haze. Chance of thunder...0 percent. Min temperature.....45-50. 24 hr trend......3 degrees cooler. Max humidity........60-66 percent. 24 hr trend......1 percent wetter. Humidity recovery...Good. 20-foot winds.......West winds around 10 mph until 2100, then downslope/downvalley 4-7 mph until 2400, then southeast around 10 mph until 0300, then downslope/downvalley 4-7 mph. Gusts up to 20 mph. Ridge top winds.....Southwest around 10 mph until 2400, then east. Chc of wetting rain.Zero percent. Transport winds.....West around 10 mph until 2400, then southeast. Mixing Height.......4000-6000 ft agl until 2400, then 400-1000 ft agl. Smoke dispersal.....Good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy then becoming mostly sunny. Haze early in the morning. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....76-81. 24 hr trend......Unchanged. Min humidity........17-23 percent. 24 hr trend......Unchanged. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west around 10 mph. Gusts up to 20 mph. Ridge top winds.....Southeast around 10 mph until 1200, then west. Chc of wetting rain.Zero percent. Transport winds.....South around 10 mph until 1200, then west around 20 mph. Mixing Height.......2800-4800 ft agl until 1200, then 9400-11400 ft agl. Smoke dispersal.....Fair to good until 1200, then excellent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds generally less than 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the mid 40s. Highs in the upper 70s. Winds generally less than 10 mph. .SUNDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds generally less than 10 mph. .MONDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the mid 40s. Highs 64 to 69. $$ WYZ416-212045- West Wind River Mountains/East Zone Bridger Teton NF- 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Chance of thunder...10 percent. Min temperature.....49-54. 24 hr trend......2 degrees warmer. Max humidity........56-62 percent. 24 hr trend......18 percent wetter. Humidity recovery...Moderate. 20-foot winds.......West winds around 10 mph with gusts to around 25 mph until 2100, then north with gusts to around 25 mph until 0300, 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.......3800-5800 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Isolated showers early in the morning. Isolated showers early in the morning. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....71-76. 24 hr trend......6 degrees cooler. Min humidity........25-31 percent. 24 hr trend......10 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then southwest around 10 mph. Gusts up to 20 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 10 mph until 1200, then around 20 mph. Mixing Height.......2600-4600 ft agl until 1200, then 7200-9200 ft agl. Smoke dispersal.....Fair to good until 1200, then very good. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Haze. Chance of thunder...0 percent. Min temperature.....45-50. 24 hr trend......4 degrees cooler. Max humidity........58-64 percent. 24 hr trend......3 percent wetter. Humidity recovery...Good. 20-foot winds.......Northwest winds around 10 mph until 2100, then northeast until 0300, then downslope/downvalley 4-7 mph. Gusts up to 20 mph. Ridge top winds.....North around 15 mph until 2400, then northeast. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph until 2400, then northeast. Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy. Haze early in the morning. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....71-76. 24 hr trend......1 degree cooler. Min humidity........23-29 percent. 24 hr trend......2 percent drier. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west around 10 mph. Gusts up to 20 mph. Ridge top winds.....South around 10 mph until 1200, then west. Chc of wetting rain.Zero percent. Transport winds.....West around 10 mph until 1200, then around 20 mph. Mixing Height.......2800-4800 ft agl until 1200, then 8800-10800 ft agl. Smoke dispersal.....Fair to good until 1200, then excellent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly clear. Slight chance of showers and thunderstorms in the evening. Lows in the lower 40s. Northeast winds around 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the mid 40s. Highs in the lower 70s. North winds around 10 mph. .SUNDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds generally less than 10 mph. .MONDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the lower 40s. Highs in the lower 60s. $$ WYZ288-212045- East Wind River Mountains/South Shoshone NF- Including the cities of Dubois and South Pass 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms after midnight. Some thunderstorms may produce gusty winds after midnight. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....54-59. 24 hr trend......2 degrees warmer. Max humidity........49-55 percent. 24 hr trend......18 percent wetter. Humidity recovery...Moderate. 20-foot winds.......West winds around 10 mph with gusts to around 25 mph. Ridge top winds.....West around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 15 mph. Mixing Height.......4800-6800 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Haze early in the morning. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....73-78. 24 hr trend......7 degrees cooler. Min humidity........24-30 percent. 24 hr trend......15 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then east around 10 mph until 1200, then south until 1500, then west. Gusts up to 20 mph. Ridge top winds.....Southwest around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West 15 to 20 mph. Mixing Height.......2400-4400 ft agl until 1200, then 6800-8800 ft agl. Smoke dispersal.....Poor to fair until 1200, then very good. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Slight chance of showers and thunderstorms early in the evening. Haze after midnight. Areas of smoke after midnight. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....48-53. 24 hr trend......6 degrees cooler. Max humidity........71-77 percent. 24 hr trend......24 percent wetter. Humidity recovery...Excellent. 20-foot winds.......Northwest winds around 10 mph and gusty. Ridge top winds.....Northwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph until 2400, then northeast. Mixing Height.......2600-4600 ft agl until 2400, then 400-800 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy. Haze and areas of smoke early in the morning. Chance of showers and slight chance of thunderstorms in the afternoon. Chance of precipitation 30 percent. Chance of thunder...20 percent. Max temperature.....70-75. 24 hr trend......3 degrees cooler. Min humidity........27-33 percent. 24 hr trend......5 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north around 10 mph. Gusts up to 25 mph. Ridge top winds.....Northeast 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 15 mph. Mixing Height.......2200-4200 ft agl until 1200, then 7000-9000 ft agl. Smoke dispersal.....Poor to fair until 1200, then very good. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening. Lows in the upper 40s. Northeast winds around 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the upper 40s. Highs in the lower 70s. Northeast winds around 10 mph. .SUNDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows in the upper 40s. Highs in the upper 60s. Winds generally less than 10 mph. .MONDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the mid 40s. Highs in the mid 60s. Winds generally less than 10 mph. .TUESDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the mid 40s. Highs in the lower 60s. .WEDNESDAY...Mostly cloudy. Chance of showers in the morning, then showers likely and slight chance of thunderstorms in the afternoon. Highs in the lower 60s. $$ WYZ414-212045- Salt and Wyoming Ranges/West Zone Bridger Teton NF- Including the city of Afton 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Chance of thunder...0 percent. Min temperature.....49-54. 24 hr trend......Unchanged. Max humidity........63-69 percent. 24 hr trend......12 percent wetter. Humidity recovery...Good. 20-foot winds.......Northwest winds around 10 mph until 2100, then downslope/downvalley 4-7 mph. Gusts up to 20 mph. Ridge top winds.....Northwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing Height.......3800-5800 ft agl until 2400, then 400-1000 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the late morning and early afternoon. Isolated dry thunderstorms late in the afternoon. Some thunderstorms may produce gusty winds in the late morning and afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....78-83. 24 hr trend......4 degrees cooler. Min humidity........18-24 percent. 24 hr trend......5 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west around 10 mph. Gusts up to 20 mph. Ridge top winds.....Southwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 10 mph until 1200, then west around 20 mph. Mixing Height.......2600-4600 ft agl until 1200, then 8200-10200 ft agl. Smoke dispersal.....Poor to fair until 1200, then very good to excellent. .THURSDAY NIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Haze early in the evening. Areas of smoke early in the morning. Chance of thunder...0 percent. Min temperature.....45-50. 24 hr trend......2 degrees cooler. Max humidity........57-63 percent. 24 hr trend......7 percent drier. Humidity recovery...Good. 20-foot winds.......Northwest winds around 10 mph and gusty until 2100, then downslope/downvalley 4-7 mph. Ridge top winds.....Northwest around 10 mph until 2400, then east. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 10 mph until 2400, then northeast. Mixing Height.......3800-5800 ft agl until 2400, then 400-1000 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy. Haze and areas of smoke early in the morning. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....78-83. 24 hr trend......Unchanged. Min humidity........17-23 percent. 24 hr trend......2 percent drier. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west around 10 mph with gusts to around 25 mph. Ridge top winds.....South around 10 mph until 1200, then west. Chc of wetting rain.Zero percent. Transport winds.....Southwest around 10 mph until 1200, then west around 20 mph. Mixing Height.......3000-5000 ft agl until 1200, then 10200-12200 ft agl. Smoke dispersal.....Poor to fair until 1200, then excellent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds generally less than 10 mph. .SATURDAY...Mostly clear. Lows around 50. Highs in the upper 70s. Winds generally less than 10 mph. .SUNDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows around 50. Highs in the mid 70s. Winds generally less than 10 mph. .MONDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the upper 40s. Highs in the upper 60s. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the mid 40s. Highs 62 to 67. $$ WYZ277>279-212045- Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Including the cities of Evanston, Fort Bridger, Kemmerer, Big Piney, Farson, Pinedale, Green River, Rock Springs, and Wamsutter 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Areas of smoke after midnight. Haze late in the night. Chance of thunder...0 percent. Min temperature.....52-57. 24 hr trend......5 degrees warmer. Max humidity........51-57 percent. 24 hr trend......11 percent wetter. Humidity recovery...Moderate. 20-foot winds.......West winds around 10 mph with gusts to around 25 mph until 2400, then northwest with gusts to around 15 mph until 0300, then downslope/downvalley 4-7 mph. Ridge top winds.....Northwest 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....West around 15 mph until 2400, then north. Mixing Height.......6000-8000 ft agl until 2400, then 400-600 ft agl. Smoke dispersal.....Good to very good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Haze early in the morning. Haze late in the morning. Isolated showers and dry thunderstorms in the afternoon. Some thunderstorms may produce gusty winds early in the afternoon. Some thunderstorms may produce gusty winds late in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....79-84. 24 hr trend......4 degrees cooler. Min humidity........21-27 percent. 24 hr trend......10 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then east around 10 mph with gusts to around 25 mph until 1500, then west with gusts to around 25 mph. Ridge top winds.....Northeast around 10 mph until 1200, then west. Chc of wetting rain.Zero percent. Transport winds.....Northeast around 10 mph until 1200, then west. Mixing Height.......1800-3800 ft agl until 1200, then 7800-9800 ft agl. Smoke dispersal.....Poor to fair until 1200, then very good. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Slight chance of thunderstorms early in the evening. Slight chance of showers in the evening. Haze early in the morning. Chance of precipitation 20 percent. Chance of thunder...10 percent. Min temperature.....48-53. 24 hr trend......3 degrees cooler. Max humidity........58-64 percent. 24 hr trend......19 percent wetter. Humidity recovery...Good. 20-foot winds.......North winds around 10 mph with gusts to around 25 mph until 2400, then northeast with gusts to around 15 mph. Ridge top winds.....North around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy. Haze early in the morning. Slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Chance of thunder...20 percent. Max temperature.....77-82. 24 hr trend......2 degrees cooler. Min humidity........25-31 percent. 24 hr trend......1 percent wetter. 20-foot winds.......Northeast winds around 10 mph until 0900, then upslope/upvalley 5-9 mph until 1500, then west around 10 mph. Gusts up to 20 mph. Ridge top winds.....Northeast around 10 mph until 1200, then northwest. Chc of wetting rain.Zero percent. Transport winds.....Northeast around 10 mph until 1200, then west. Mixing Height.......2000-4000 ft agl until 1200, then 8200-10200 ft agl. Smoke dispersal.....Poor to fair until 1200, then very good. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening. Lows around 50. Northeast winds around 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the lower 80s. Northeast winds around 10 mph. .SUNDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs around 80. Winds generally less than 10 mph. .MONDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the upper 40s. Highs around 70. $$ WYZ289-212045- Granite/Green/Ferris/Rattlesnake Mountains- Including the city of Jeffrey City 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Partly cloudy. Areas of smoke late in the evening. Haze late in the night. Chance of thunder...0 percent. Min temperature.....58-63. 24 hr trend......4 degrees warmer. Max humidity........39-45 percent. 24 hr trend......1 percent drier. Humidity recovery...Moderate. 20-foot winds.......West winds around 10 mph until 2400, then northwest. Gusts up to 20 mph. Ridge top winds.....West around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northwest around 15 mph until 2400, then north. Mixing Height.......6600-8600 ft agl until 2400, then 400-600 ft agl. Smoke dispersal.....Good to very good until 2400, then poor. .THURSDAY... Sky/weather.........Partly cloudy. Haze early in the morning. Isolated showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....79-84. 24 hr trend......7 degrees cooler. Min humidity........22-28 percent. 24 hr trend......14 percent wetter. 20-foot winds.......Northwest winds around 10 mph until 0900, then northeast. Gusts up to 20 mph. Ridge top winds.....Northeast around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Northeast around 15 mph until 1200, then northwest. Mixing Height.......1800-3800 ft agl until 1200, then 6800-8800 ft agl. Smoke dispersal.....Poor to fair until 1200, then good to very good. .THURSDAY NIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Chance of showers and slight chance of thunderstorms in the evening. Slight chance of showers after midnight. Areas of smoke in the evening. Haze early in the evening. Areas of smoke after midnight. Chance of precipitation 40 percent. Chance of thunder...20 percent. Min temperature.....55-60. 24 hr trend......4 degrees cooler. Max humidity........73-79 percent. 24 hr trend......34 percent wetter. Humidity recovery...Excellent. 20-foot winds.......Northeast winds 10 to 15 mph with gusts to around 25 mph. Ridge top winds.....Northeast 15 to 20 mph. Chc of wetting rain.Less than 5 percent. Transport winds.....Northeast 15 to 20 mph. Mixing Height.......2400-4400 ft agl until 2400, then 400-600 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy. Haze and areas of smoke early in the morning. Slight chance of thunderstorms early in the afternoon. Chance of showers in the afternoon. Chance of thunderstorms late in the afternoon. Chance of precipitation 40 percent. Chance of thunder...30 percent. Max temperature.....76-81. 24 hr trend......5 degrees cooler. Min humidity........28-34 percent. 24 hr trend......10 percent wetter. 20-foot winds.......Northeast winds around 10 mph. Gusts up to 15 mph until 1200, then 30 mph. Ridge top winds.....Northeast around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......1400-3400 ft agl until 1200, then 6600-8600 ft agl. Smoke dispersal.....Poor until 1200, then good to very good. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening, then slight chance of showers after midnight. Lows in the lower 50s. Northeast winds around 15 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. Northeast winds around 10 mph. .SUNDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the upper 70s. Northeast winds around 10 mph. .MONDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows around 50. Highs in the mid 70s. Winds generally less than 10 mph. .TUESDAY THROUGH WEDNESDAY...Mostly cloudy with chance of showers and slight chance of thunderstorms. Lows around 50. Highs in the lower 70s. $$ WYZ300-212045- Casper Mountain- 1240 PM MDT Wed Aug 20 2025 .TONIGHT... Sky/weather.........Mostly clear. Chance of thunder...0 percent. Min temperature.....58-63. 24 hr trend......1 degree cooler. Max humidity........45-51 percent. 24 hr trend......11 percent drier. Humidity recovery...Moderate. 20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then southeast around 10 mph until 0300, then downslope/downvalley 4-7 mph. Gusts up to 25 mph. Ridge top winds.....Southeast around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....South around 15 mph. Mixing Height.......6000-8000 ft agl until 2400, then 200-600 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .THURSDAY... Sky/weather.........Mostly sunny then becoming partly cloudy. Isolated showers and thunderstorms late in the afternoon. Some thunderstorms may produce gusty winds late in the afternoon. Chance of precipitation 20 percent. Chance of thunder...10 percent. Max temperature.....78-83. 24 hr trend......7 degrees cooler. Min humidity........28-34 percent. 24 hr trend......18 percent wetter. 20-foot winds.......North winds 10 to 15 mph with higher gusts. Ridge top winds.....North around 15 mph. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing Height.......1000-3000 ft agl until 1200, then 5400-7400 ft agl. Smoke dispersal.....Poor to fair until 1200, then good to very good. .THURSDAY NIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. Chance of showers and thunderstorms in the evening, then slight chance of showers and thunderstorms after midnight. Chance of precipitation 40 percent. Chance of thunder...30 percent. Min temperature.....54-59. 24 hr trend......3 degrees cooler. Max humidity........78-84 percent. 24 hr trend......33 percent wetter. Humidity recovery...Excellent. 20-foot winds.......East winds around 10 mph with gusts to around 25 mph until 0300, then downslope/downvalley 4-7 mph. Ridge top winds.....East 10 to 15 mph. Chc of wetting rain.10 percent until 2400, then zero percent. Transport winds.....East 10 to 15 mph. Mixing Height.......2400-4400 ft agl until 2400, then 200-600 ft agl. Smoke dispersal.....Fair to good until 2400, then poor. .FRIDAY... Sky/weather.........Partly cloudy. Slight chance of thunderstorms in the late morning and early afternoon. Chance of showers in the afternoon. Chance of thunderstorms late in the afternoon. Chance of precipitation 50 percent. Chance of thunder...40 percent. Max temperature.....73-78. 24 hr trend......7 degrees cooler. Min humidity........43-49 percent. 24 hr trend......15 percent wetter. 20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then northeast around 10 mph with gusts to around 25 mph. Ridge top winds.....Northeast 10 to 15 mph. Chc of wetting rain.Zero percent. Transport winds.....Southeast around 10 mph until 1200, then north. Mixing Height.......1400-3400 ft agl until 1200, then 5800-7800 ft agl. Smoke dispersal.....Poor until 1200, then good to very good. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Chance of showers and thunderstorms in the evening, then chance of showers and slight chance of thunderstorms after midnight. Lows in the lower 50s. Winds generally less than 10 mph. .SATURDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows around 50. Highs in the lower 70s. Winds generally less than 10 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the lower 70s. Winds generally less than 10 mph. .MONDAY...Mostly cloudy with chance of showers and thunderstorms. Lows in the upper 40s. Highs in the upper 60s. Winds generally less than 10 mph. .TUESDAY...Partly cloudy. Chance of showers and thunderstorms. Lows in the upper 40s. Highs in the upper 60s. .WEDNESDAY...Partly cloudy. Slight chance of showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Highs in the upper 60s. $$