Zone Forecast Product
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
574 FPUS55 KRIW 182133 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 331 PM MDT Tue Aug 18 2026 WYZ020-182245- Natrona County Lower Elevations- Including the city of Casper 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Near steady temperature in the upper 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Some thunderstorms may be severe. Lows in the lower 50s. North winds 10 to 15 mph with gusts up to 25 mph, becoming southwest after midnight. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the lower 80s. Southwest winds around 10 mph, becoming northwest with gusts up to 25 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. North winds 10 to 15 mph. .THURSDAY...Mostly sunny. Highs around 90. West winds around 10 mph. Gusts up to 25 mph in the afternoon. .THURSDAY NIGHT...Mostly clear. Lows in the upper 50s. .FRIDAY...Mostly sunny. Highs around 90. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. .SATURDAY...Partly cloudy. A slight chance of. Highs around 90. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the lower 60s. Chance of rain 30 percent. .SUNDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 80s. .SUNDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 50s. Chance of rain 30 percent. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 80s. $$ WYZ017-182245- Wind River Basin- Including the cities of Riverton and Shoshoni 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Highs around 80. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the mid 50s. North winds 10 to 15 mph with gusts up to 30 mph, becoming west after midnight. Chance of rain 30 percent. .WEDNESDAY...Sunny. Highs in the mid 80s. North winds around 10 mph with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. Northeast winds around 10 mph with gusts up to 20 mph, becoming southwest after midnight. .THURSDAY...Mostly sunny. Highs in the upper 80s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 60. .FRIDAY...Mostly sunny. Highs around 90. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 80s. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 60. Chance of rain 20 percent. .SUNDAY...Partly cloudy in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 60. .MONDAY...Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ WYZ018-182245- Lander Foothills- Including the city of Lander 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Highs in the lower 80s. Southeast winds around 10 mph with gusts up to 20 mph. Chance of rain 40 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph in the evening. Chance of rain 30 percent. .WEDNESDAY...Sunny. Highs in the mid 80s. North winds around 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest winds around 10 mph, becoming west after midnight. .THURSDAY...Mostly sunny. Highs in the upper 80s. Northeast winds around 10 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows around 60. .FRIDAY...Mostly sunny. A slight chance of. Highs around 90. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. .SATURDAY...Mostly cloudy in the morning, then partly cloudy with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs around 90. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Lows around 60. Chance of rain 20 percent. .SUNDAY...Partly cloudy in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 60. .MONDAY...Partly cloudy in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. $$ WYZ028-182245- Rock Springs and Green River- Including the cities of Rock Springs and Green River 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Near steady temperature in the upper 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph, becoming southeast after midnight. .WEDNESDAY...Mostly sunny and breezy. Highs in the mid 80s. West winds around 10 mph, increasing to 15 to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. .THURSDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 80s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 50s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 90. .FRIDAY NIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy in the morning, then partly cloudy with showers with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 80 percent. .SATURDAY NIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 30 percent. .SUNDAY...Partly cloudy in the morning, then mostly sunny with showers likely with a chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 70 percent. .SUNDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the lower 50s. Chance of rain 30 percent. .MONDAY...Partly cloudy. Showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 60 percent. $$ WYZ013-182245- Jackson Hole- Including the city of Jackson 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Highs in the lower 70s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the mid 40s. Northwest winds 10 to 15 mph with gusts up to 30 mph in the evening. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 70s. West winds around 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. West winds around 10 mph in the evening. .THURSDAY...Mostly sunny. Highs in the lower 80s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows around 50. .FRIDAY...Partly cloudy. Highs in the mid 80s. .FRIDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the lower 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 40s. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 40s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. $$ WYZ003-182245- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Mostly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may be severe. Breezy with highs in the mid 70s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the mid 50s. West winds 10 to 15 mph. Chance of rain 30 percent. .WEDNESDAY...Sunny. Highs around 80. West winds around 10 mph, becoming northeast in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. North winds around 10 mph with gusts up to 20 mph, becoming southwest after midnight. .THURSDAY...Mostly sunny. Highs in the mid 80s. Southwest winds around 10 mph, becoming northeast with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 60. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. .SATURDAY...Mostly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy. Lows around 60. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 60. .MONDAY...Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 20 percent. $$ WYZ004-182245- North Bighorn Basin- Including the cities of Basin, Greybull, Lovell, Powell, and Shell 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Breezy. Near steady temperature in the upper 70s. Northwest winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 40 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the mid 50s. West winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 30 percent. .WEDNESDAY...Sunny. Highs in the mid 80s. North winds around 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. North winds around 10 mph in the evening. .THURSDAY...Sunny. Highs around 90. East winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 60. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 90. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s. .SATURDAY...Mostly cloudy with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs around 90. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy. Lows around 60. .SUNDAY...Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 60. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the mid 80s. $$ WYZ006-182245- Southeast Bighorn Basin- Including the cities of Ten Sleep and Worland 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Highs around 80. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Breezy with lows in the mid 50s. North winds 15 to 20 mph with gusts up to 30 mph in the evening. Chance of rain 30 percent. .WEDNESDAY...Sunny. Highs in the mid 80s. North winds around 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows around 60. Northeast winds around 10 mph in the evening. .THURSDAY...Mostly sunny. Highs around 90. North winds around 10 mph in the afternoon. .THURSDAY NIGHT...Mostly clear. Lows in the lower 60s. .FRIDAY...Mostly sunny. Highs in the lower 90s. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs around 90. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 20 percent. .SUNDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs around 90. .SUNDAY NIGHT...Partly cloudy. Lows around 60. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 80s. $$ WYZ005-182245- Southwest Bighorn Basin- Including the city of Thermopolis 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Near steady temperature in the mid 70s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Breezy with lows in the mid 50s. North winds 15 to 20 mph with gusts up to 30 mph, becoming south around 10 mph after midnight. Chance of rain 30 percent. .WEDNESDAY...Sunny. Highs in the lower 80s. Northeast winds around 10 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows around 60. Northeast winds around 10 mph in the evening. .THURSDAY...Mostly sunny. Highs in the upper 80s. East winds around 10 mph in the afternoon. .THURSDAY NIGHT...Mostly clear. Lows in the lower 60s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 90s. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 20 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 60. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 80s. $$ WYZ023-182245- Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Near steady temperature in the mid 70s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 30 percent. .TONIGHT...Mostly clear. Lows in the upper 40s. Southwest winds around 10 mph with gusts up to 20 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the lower 80s. Northwest winds around 10 mph with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. North winds around 10 mph in the evening. .THURSDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 80s. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 50s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 90. .FRIDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers after midnight. Lows in the mid 50s. Chance of rain 30 percent. .SATURDAY...Cloudy in the morning, then becoming partly cloudy. A chance of showers. A chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 50 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows around 50. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 50 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 40s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 40 percent. $$ WYZ025-182245- Upper Green River Basin Foothills- Including the city of Pinedale 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Highs around 70. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent. .TONIGHT...Mostly clear. Lows in the mid 40s. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the upper 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. .THURSDAY...Mostly sunny. Highs around 80. West winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 40s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 80s. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 50 percent. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 40s. Chance of rain 20 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 50 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 40s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 30 percent. $$ WYZ026-182245- Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 70s. West winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 40s. Northwest winds 10 to 15 mph with gusts up to 30 mph in the evening. .WEDNESDAY...Mostly sunny and breezy. Highs in the lower 80s. North winds around 10 mph, becoming west 15 to 20 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 40s. Northwest winds 10 to 15 mph. .THURSDAY...Mostly sunny. Highs in the mid 80s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 50s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy with a slight chance of showers in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy after midnight. Lows around 50. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. .SUNDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows around 50. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. $$ WYZ010-182245- Northeast Johnson County- Including the city of Buffalo 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Mostly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may be severe. Breezy. Near steady temperature in the mid 70s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear with a slight chance of showers after midnight. Some thunderstorms may be severe. Lows in the mid 50s. Southwest winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the lower 80s. Southwest winds around 10 mph, becoming north in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. North winds 10 to 15 mph in the evening. .THURSDAY...Mostly sunny. Highs around 90. Northeast winds around 10 mph in the afternoon. .THURSDAY NIGHT...Mostly clear. Lows around 60. .FRIDAY...Mostly sunny. Highs around 90. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. .SATURDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the lower 60s. Chance of rain 30 percent. .SUNDAY...Partly cloudy in the morning, then mostly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 60. Chance of rain 20 percent. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 80s. $$ WYZ011-182245- Southeast Johnson County- Including the city of Kaycee 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Breezy. Near steady temperature in the upper 70s. West winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Breezy with lows in the mid 50s. North winds 15 to 20 mph with gusts up to 35 mph, becoming southwest around 10 mph after midnight. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the lower 80s. Southwest winds around 10 mph, becoming north with gusts up to 25 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. North winds 10 to 15 mph in the evening. .THURSDAY...Mostly sunny. Highs around 90. Northwest winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Mostly clear. Lows around 60. .FRIDAY...Mostly sunny. Highs in the lower 90s. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. .SATURDAY...Partly cloudy. A slight chance of. Highs in the lower 90s. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the lower 60s. Chance of rain 30 percent. .SUNDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 80s. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 60. Chance of rain 20 percent. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 80s. $$ WYZ027-182245- South Lincoln County- Including the cities of Kemmerer and Cokeville 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Partly cloudy and breezy. Highs around 80. West winds 15 to 20 mph. .TONIGHT...Partly cloudy in the evening, then clearing. Lows around 50. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. .WEDNESDAY...Mostly sunny and breezy. Highs in the mid 80s. West winds around 10 mph, increasing to 15 to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. Northwest winds 10 to 15 mph. .THURSDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the mid 80s. Southwest winds around 10 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 50s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 80s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the mid 50s. Chance of rain 40 percent. .SATURDAY...Mostly cloudy in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy after midnight. Lows in the lower 50s. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 50. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 30 percent. $$ WYZ016-182245- Upper Wind River Basin- Including the city of Dubois 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Highs in the mid 70s. West winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows around 50. West winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny and breezy. Highs in the upper 70s. Northwest winds 15 to 20 mph. .WEDNESDAY NIGHT...Mostly clear and breezy. Lows around 50. Northwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to around 10 mph after midnight. .THURSDAY...Mostly sunny. Highs in the lower 80s. West winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 50s. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the mid 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40 percent. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 50s. Chance of rain 20 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 50. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. $$ WYZ001-182245- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Partly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may be severe. Breezy. Near steady temperature in the mid 60s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the lower 40s. West winds 10 to 15 mph with gusts up to 25 mph in the evening. Chance of rain 30 percent. .WEDNESDAY...Sunny. Highs in the lower 70s. West winds 10 to 15 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. Southwest winds around 10 mph with gusts up to 20 mph in the evening. .THURSDAY...Mostly sunny. Highs in the mid 70s. West winds around 10 mph in the afternoon. Gusts up to 25 mph. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 40s. .FRIDAY...Partly cloudy. A slight chance of. Highs in the upper 70s. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy with showers likely. A chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 40s. Chance of rain 30 percent. .SUNDAY...Partly cloudy in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 40s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs around 70. Chance of rain 20 percent. $$ WYZ029-182245- Flaming Gorge- 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Near steady temperature in the upper 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 50s. Northwest winds 10 to 15 mph, becoming southeast after midnight. .WEDNESDAY...Mostly sunny. Highs in the mid 80s. West winds around 10 mph, becoming northwest with gusts up to 25 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. West winds 10 to 15 mph with gusts up to 25 mph in the evening. .THURSDAY...Partly cloudy. Highs in the mid 80s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows around 60. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 80s. .FRIDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy after midnight. Lows around 60. Chance of rain 30 percent. .SATURDAY...Mostly cloudy in the morning, then partly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 60 percent. .SATURDAY NIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 40 percent. .SUNDAY...Partly cloudy. Showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 60 percent. .SUNDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 50s. Chance of rain 30 percent. .MONDAY...Partly cloudy. Showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 60 percent. $$ WYZ022-182245- Casper Mountain- 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Near steady temperature around 70. West winds 10 to 15 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the lower 50s. Northwest winds around 10 mph with gusts up to 20 mph, becoming southwest after midnight. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the mid 70s. Southwest winds around 10 mph, becoming northwest with gusts up to 25 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. Northeast winds 10 to 15 mph in the evening. .THURSDAY...Mostly sunny. Highs in the lower 80s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Mostly clear. Lows in the upper 50s. .FRIDAY...Mostly sunny. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. .SATURDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 40 percent. .SUNDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 50s. Chance of rain 30 percent. .MONDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. $$ WYZ002-182245- Absaroka Mountains- 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Partly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may be severe. Breezy. Near steady temperature in the lower 60s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Breezy with lows in the mid 40s. West winds 15 to 20 mph with gusts up to 30 mph, diminishing to around 10 mph with gusts up to 20 mph after midnight. Chance of rain 30 percent. .WEDNESDAY...Sunny, breezy with highs in the upper 60s. West winds 15 to 20 mph with gusts up to 30 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. West winds 10 to 15 mph with gusts up to 25 mph. .THURSDAY...Mostly sunny. A slight chance of. Highs in the lower 70s. West winds 10 to 15 mph with gusts up to 30 mph. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 50s. .FRIDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows in the lower 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows around 50. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Breezy with highs in the mid 60s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 40s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. $$ WYZ007-182245- Owl Creek and Bridger Mountains- 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Breezy with highs in the mid 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the mid 50s. North winds 10 to 15 mph with gusts up to 30 mph, becoming southwest after midnight. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 70s. Southwest winds around 10 mph, becoming northeast with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. Northeast winds around 10 mph, becoming west after midnight. .THURSDAY...Mostly sunny. Highs in the lower 80s. Southwest winds around 10 mph, becoming northeast with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Mostly clear. Lows in the lower 60s. .FRIDAY...Mostly sunny. A slight chance of. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 20 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 60. .MONDAY...Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. $$ WYZ008-182245- Bighorn Mountains West- 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Partly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may be severe. Breezy with highs in the upper 60s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the lower 50s. Northwest winds 10 to 15 mph with gusts up to 30 mph, becoming east after midnight. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the lower 70s. West winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. North winds 10 to 15 mph, becoming east after midnight. .THURSDAY...Mostly sunny. Highs in the upper 70s. Southwest winds around 10 mph with gusts up to 20 mph, becoming west with gusts up to 30 mph in the afternoon. .THURSDAY NIGHT...Mostly clear. Lows in the upper 50s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 70s. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s. .SATURDAY...Mostly cloudy with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 50s. Chance of rain 20 percent. .SUNDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 50s. Chance of rain 20 percent. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 70s. $$ WYZ009-182245- Bighorn Mountains Southeast- 331 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING... .THIS AFTERNOON...Mostly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may be severe. Breezy. Near steady temperature in the mid 60s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy with a chance of rain showers and thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the upper 40s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the lower 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. Northwest winds 10 to 15 mph. .THURSDAY...Mostly sunny. Highs in the upper 70s. West winds 10 to 15 mph with gusts up to 25 mph. .THURSDAY NIGHT...Mostly clear. Lows in the upper 50s. .FRIDAY...Mostly sunny. A slight chance of. Highs in the upper 70s. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 50s. .SATURDAY...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 50s. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 50s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 20 percent. $$ WYZ012-182245- Teton and Gros Ventre Mountains- 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Highs in the mid 60s. West winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Some thunderstorms may be severe. Lows in the mid 40s. West winds 10 to 15 mph with gusts up to 25 mph in the evening. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs around 70. West winds 10 to 15 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. West winds 10 to 15 mph in the evening. .THURSDAY...Mostly sunny. Highs in the mid 70s. South winds around 10 mph, becoming west with gusts up to 25 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 50s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 70s. .FRIDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the lower 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy with showers likely. A chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 40s. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 40s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. $$ WYZ014-182245- Wind River Mountains West- 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with showers likely with a chance of thunderstorms. Breezy with highs in the mid 60s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Breezy with lows in the mid 40s. Northwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to around 10 mph after midnight. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny and breezy. Highs in the upper 60s. West winds 15 to 20 mph with gusts up to 30 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. Northwest winds 10 to 15 mph with gusts up to 25 mph, becoming north after midnight. .THURSDAY...Mostly sunny. Highs in the lower 70s. West winds 10 to 15 mph with gusts up to 25 mph. .THURSDAY NIGHT...Partly cloudy. Lows around 50. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the mid 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows in the lower 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 40s. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 40s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. $$ WYZ015-182245- Wind River Mountains East- 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with showers likely with a chance of thunderstorms. Breezy. Near steady temperature in the lower 60s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Breezy with lows in the mid 40s. West winds 15 to 20 mph with gusts up to 30 mph, diminishing to around 10 mph after midnight. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny and breezy. Highs in the upper 60s. West winds 15 to 20 mph with gusts up to 30 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. West winds 10 to 15 mph. Gusts up to 30 mph in the evening. .THURSDAY...Mostly sunny. Highs in the lower 70s. West winds 10 to 15 mph with gusts up to 30 mph. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 50s. .FRIDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows in the lower 50s. Chance of rain 30 percent. .SATURDAY...Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows around 50. Chance of rain 30 percent. .SUNDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 40s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40 percent. $$ WYZ019-182245- Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Highs in the upper 70s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 50s. West winds 10 to 15 mph with gusts up to 25 mph, becoming south after midnight. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny and breezy. Highs in the lower 80s. Southwest winds around 10 mph with gusts up to 20 mph, becoming northwest 15 to 20 mph with gusts up to 30 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. North winds 10 to 15 mph with gusts up to 25 mph in the evening. .THURSDAY...Mostly sunny. Highs in the mid 80s. West winds around 10 mph with gusts up to 25 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. .FRIDAY...Mostly sunny. Highs in the upper 80s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows around 60. .SATURDAY...Mostly cloudy in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 50s. Chance of rain 30 percent. .SUNDAY...Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. .SUNDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 50s. Chance of rain 20 percent. .MONDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. $$ WYZ024-182245- Salt River and Wyoming Ranges- 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Highs around 70. West winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .TONIGHT...Mostly clear. Lows in the upper 40s. West winds 10 to 15 mph. .WEDNESDAY...Mostly sunny. Highs in the mid 70s. West winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. .THURSDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the upper 70s. South winds around 10 mph, becoming west with gusts up to 25 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 50s. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs around 80. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the mid 50s. Chance of rain 40 percent. .SATURDAY...Cloudy with a chance of showers in the morning, then partly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the lower 50s. Chance of rain 30 percent. .SUNDAY...Partly cloudy. Showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 60 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 50. Chance of rain 20 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 40 percent. $$ WYZ030-182245- East Sweetwater County- Including the city of Wamsutter 331 PM MDT Tue Aug 18 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers and thunderstorms. Highs around 80. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 50s. West winds 10 to 15 mph. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny and breezy. Highs in the mid 80s. Southwest winds around 10 mph, becoming west 15 to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. .THURSDAY...Mostly sunny. Highs in the mid 80s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .THURSDAY NIGHT...Partly cloudy. Lows around 60. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 90. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 50s. .SATURDAY...Mostly cloudy in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the mid 50s. Chance of rain 30 percent. .SUNDAY...Partly cloudy in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy after midnight. Lows in the lower 50s. Chance of rain 30 percent. .MONDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 30 percent. $$