Zone Forecast Product
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
024 FPUS55 KRIW 201419 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 817 AM MDT Sun Sep 20 2026 WYZ020-202200- Natrona County Lower Elevations- Including the city of Casper 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly cloudy. Showers with a slight chance of thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 80 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows around 40. North winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Mostly sunny. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear. Lows around 40. Southeast winds around 10 mph with gusts up to 25 mph. .TUESDAY...Mostly sunny. Highs in the mid 70s. South winds around 10 mph with gusts up to 20 mph. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the upper 40s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Mostly sunny. Highs in the upper 70s. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny. Highs around 80. .FRIDAY NIGHT...Mostly clear. Lows around 50. .SATURDAY...Mostly sunny and breezy. Highs in the upper 70s. $$ WYZ017-202200- Wind River Basin- Including the cities of Riverton and Shoshoni 817 AM MDT Sun Sep 20 2026 .TODAY...Areas of fog this morning. Mostly cloudy with showers this morning, then partly cloudy with a chance of showers with a slight chance of thunderstorms this afternoon. Highs in the lower 60s. West winds around 10 mph, becoming north this afternoon. Chance of rain 80 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .MONDAY...Mostly sunny. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. East winds around 10 mph with gusts up to 20 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny. Highs in the mid 70s. South winds around 10 mph with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows around 50. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Sunny. Highs in the upper 70s. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Mostly clear. Lows around 50. .SATURDAY...Mostly sunny. Highs in the upper 70s. $$ WYZ018-202200- Lander Foothills- Including the city of Lander 817 AM MDT Sun Sep 20 2026 .TODAY...Areas of fog this morning. Partly cloudy with a chance of showers. A slight chance of thunderstorms this afternoon. Highs in the mid 60s. Southeast winds around 10 mph with gusts up to 20 mph this morning. Chance of rain 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .MONDAY...Mostly sunny. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows in the lower 40s. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 70s. Southeast winds around 10 mph in the afternoon. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the upper 40s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Sunny. Highs in the upper 70s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Mostly clear. Lows around 50. .SATURDAY...Partly cloudy in the morning, then clearing. Highs around 80. $$ WYZ028-202200- Rock Springs and Green River- Including the cities of Rock Springs and Green River 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly sunny. Highs in the mid 60s. West winds around 10 mph this afternoon. .TONIGHT...Mostly clear. Lows in the mid 30s. .MONDAY...Mostly sunny. Highs in the mid 60s. .MONDAY NIGHT...Partly cloudy. Lows around 40. .TUESDAY...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs around 70. Southwest winds around 10 mph in the afternoon. Chance of rain 30 percent. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows around 40. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. A slight chance of. Highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows around 40. .THURSDAY...Sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the lower 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 70s. $$ WYZ013-202200- Jackson Hole- Including the city of Jackson 817 AM MDT Sun Sep 20 2026 .TODAY...Partly cloudy. Areas of fog this morning. A slight chance of. A slight chance of. Highs around 60. .TONIGHT...Mostly clear. Lows in the lower 30s. .MONDAY...Sunny. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. .TUESDAY...Partly cloudy. Highs around 70. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 30s. .FRIDAY...Mostly sunny. Highs in the lower 70s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 60s. $$ WYZ003-202200- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly cloudy. A chance of showers this morning. Areas of fog this morning. Highs around 60. North winds around 10 mph. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 40s. North winds around 10 mph in the evening. .MONDAY...Mostly sunny. Highs in the upper 60s. Southeast winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. South winds around 10 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny. Highs in the lower 70s. Southwest winds around 10 mph, becoming southeast in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms. Lows around 50. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Mostly sunny. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 50. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 70s. $$ WYZ004-202200- North Bighorn Basin- Including the cities of Basin, Greybull, Lovell, Powell, and Shell 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly cloudy. Showers likely this morning, then a chance of showers with a slight chance of thunderstorms this afternoon. Highs in the mid 60s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 60 percent. .TONIGHT...Partly cloudy. Lows in the lower 40s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Mostly sunny. Highs around 70. Southeast winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Clear. Lows in the mid 40s. Southeast winds around 10 mph in the evening. .TUESDAY...Mostly sunny. Highs in the upper 70s. Southeast winds around 10 mph with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows around 50. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny. Highs in the lower 80s. .FRIDAY NIGHT...Mostly clear. Lows around 50. .SATURDAY...Mostly sunny. Highs around 80. $$ WYZ006-202200- Southeast Bighorn Basin- Including the cities of Ten Sleep and Worland 817 AM MDT Sun Sep 20 2026 .TODAY...Cloudy with a slight chance of thunderstorms. Showers, mainly this morning. Highs in the lower 60s. Northwest winds around 10 mph. Chance of rain 80 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 40s. .MONDAY...Mostly sunny. Highs around 70. .MONDAY NIGHT...Clear. Lows in the mid 40s. Southeast winds around 10 mph. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the upper 40s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny. Highs in the lower 80s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. .SATURDAY...Mostly sunny. Highs in the lower 80s. $$ WYZ005-202200- Southwest Bighorn Basin- Including the city of Thermopolis 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly cloudy. Showers this morning. Areas of fog this morning. Highs in the lower 60s. Northwest winds around 10 mph. Chance of rain 80 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .MONDAY...Mostly sunny. Highs around 70. Southeast winds around 10 mph in the afternoon. .MONDAY NIGHT...Clear. Lows in the mid 40s. Southeast winds around 10 mph in the evening. .TUESDAY...Mostly sunny. Highs in the mid 70s. Southwest winds around 10 mph, becoming southeast in the afternoon. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows around 50. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny. Highs around 80. .FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. .SATURDAY...Mostly sunny. Highs around 80. $$ WYZ023-202200- Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly sunny this morning, then becoming partly cloudy. Areas of fog this morning. Highs in the lower 60s. .TONIGHT...Mostly clear. Lows in the lower 30s. .MONDAY...Mostly sunny. Highs around 70. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s. .TUESDAY...Partly cloudy. A slight chance of. Highs in the lower 70s. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs in the mid 70s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the lower 70s. $$ WYZ025-202200- Upper Green River Basin Foothills- Including the city of Pinedale 817 AM MDT Sun Sep 20 2026 .TODAY...Areas of fog this morning. Partly cloudy. Highs around 60. Northwest winds around 10 mph with gusts up to 20 mph this afternoon. .TONIGHT...Mostly clear. Lows in the lower 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Mostly sunny. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. .TUESDAY...Partly cloudy. Highs in the upper 60s. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 30s. .THURSDAY...Sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Mostly clear. Lows around 40. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 60s. $$ WYZ026-202200- Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly sunny this morning, then becoming partly cloudy. Areas of fog this morning. Highs in the lower 60s. West winds around 10 mph with gusts up to 20 mph this afternoon. .TONIGHT...Mostly clear. Lows in the lower 30s. Northwest winds around 10 mph in the evening. .MONDAY...Mostly sunny. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. .TUESDAY...Partly cloudy. Highs in the upper 60s. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 30s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 30s. .THURSDAY...Sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Mostly clear. Lows around 40. .SATURDAY...Partly cloudy in the morning, then clearing. Highs around 70. $$ WYZ010-202200- Northeast Johnson County- Including the city of Buffalo 817 AM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Showers. A slight chance of thunderstorms this morning, then a chance of thunderstorms this afternoon. Some thunderstorms may produce heavy rainfall this morning. Some thunderstorms may produce heavy rainfall this afternoon. Highs around 60. Northwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 80 percent. .TONIGHT...Cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 40s. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. Chance of rain 40 percent. .MONDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 60s. Southeast winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear and breezy. Lows in the upper 40s. South winds 15 to 20 mph with gusts up to 35 mph. .TUESDAY...Mostly sunny. Highs in the upper 70s. South winds 10 to 15 mph with gusts up to 30 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of. Lows around 50. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows in the mid 50s. .FRIDAY...Mostly sunny and breezy. Highs in the lower 80s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 50s. .SATURDAY...Mostly sunny. Highs around 80. $$ WYZ011-202200- Southeast Johnson County- Including the city of Kaycee 817 AM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Showers. A slight chance of thunderstorms this morning, then a chance of thunderstorms this afternoon. Some thunderstorms may produce heavy rainfall this morning. Some thunderstorms may produce heavy rainfall this afternoon. Highs in the lower 60s. North winds around 10 mph with gusts up to 25 mph. Chance of rain 90 percent. .TONIGHT...Cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 40s. North winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 30 percent. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. South winds 10 to 15 mph with gusts up to 35 mph. .TUESDAY...Mostly sunny. Highs in the upper 70s. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny and breezy. Highs in the lower 80s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. .SATURDAY...Mostly sunny. Highs around 80. $$ WYZ027-202200- South Lincoln County- Including the cities of Kemmerer and Cokeville 817 AM MDT Sun Sep 20 2026 .TODAY...Areas of fog this morning. Mostly sunny. Highs in the lower 60s. West winds around 10 mph with gusts up to 20 mph this afternoon. .TONIGHT...Mostly clear. Lows in the mid 30s. Northwest winds around 10 mph in the evening. .MONDAY...Mostly sunny. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s. .TUESDAY...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows around 40. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows around 40. .THURSDAY...Sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Mostly clear. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs around 70. $$ WYZ016-202200- Upper Wind River Basin- Including the city of Dubois 817 AM MDT Sun Sep 20 2026 .TODAY...Partly cloudy. Areas of fog this morning. A chance of showers with a slight chance of thunderstorms this afternoon. Highs around 60. Southeast winds around 10 mph with gusts up to 20 mph this afternoon. Chance of rain 30 percent. .TONIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 30s. Southeast winds around 10 mph in the evening. Chance of rain 30 percent. .MONDAY...Mostly sunny. Highs in the lower 60s. Southeast winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows around 40. Southeast winds around 10 mph with gusts up to 20 mph, becoming west after midnight. .TUESDAY...Partly cloudy. Highs in the mid 60s. West winds around 10 mph, becoming south with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the lower 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 40s. .THURSDAY...Sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Mostly clear. Lows in the mid 40s. .SATURDAY...Mostly sunny. A slight chance of. Highs in the upper 60s. $$ WYZ001-202200- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly cloudy. Areas of fog this morning. A chance of rain showers with a slight chance of thunderstorms this afternoon. Some thunderstorms may produce heavy rainfall this afternoon. Highs in the lower 50s. Chance of rain 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .MONDAY...Mostly sunny. Highs in the lower 60s. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A slight chance of rain showers in the evening, then a chance of rain showers after midnight. Lows in the upper 30s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 30s. .FRIDAY...Mostly sunny. Highs in the mid 60s. .FRIDAY NIGHT...Mostly clear. Lows around 40. .SATURDAY...Partly cloudy. A slight chance of. Highs in the lower 60s. $$ WYZ029-202200- Flaming Gorge- 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly sunny. Highs in the mid 60s. West winds around 10 mph. .TONIGHT...Mostly clear. Lows around 40. .MONDAY...Mostly sunny. Highs in the upper 60s. .MONDAY NIGHT...Partly cloudy. Lows in the mid 40s. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs around 70. Southeast winds around 10 mph, becoming south with gusts up to 25 mph in the afternoon. Chance of rain 20 percent. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. A slight chance of. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Mostly sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs in the lower 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 50. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 70s. $$ WYZ022-202200- Casper Mountain- 817 AM MDT Sun Sep 20 2026 .TODAY...Showers with a slight chance of thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Highs in the mid 50s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 80 percent. .TONIGHT...Partly cloudy. Lows in the upper 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Mostly sunny. Highs around 60. .MONDAY NIGHT...Mostly clear. Lows in the lower 40s. Southeast winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Mostly sunny. Highs in the upper 60s. South winds around 10 mph, becoming southwest in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. Lows in the upper 40s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Mostly sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. .SATURDAY...Mostly sunny. Highs around 70. $$ WYZ002-202200- Absaroka Mountains- 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly cloudy. Rain showers likely with a slight chance of thunderstorms this afternoon. Some thunderstorms may produce heavy rainfall this afternoon. Highs around 50. Northwest winds around 10 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 30s. Northwest winds around 10 mph in the evening. Chance of rain 30 percent. .MONDAY...Mostly sunny. Highs in the mid 50s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the upper 30s. South winds around 10 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. Southwest winds around 10 mph with gusts up to 20 mph. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms. Lows in the lower 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. Highs in the lower 60s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the lower 60s. .FRIDAY NIGHT...Mostly clear and breezy. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Breezy with highs around 60. $$ WYZ007-202200- Owl Creek and Bridger Mountains- 817 AM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Mostly cloudy. Showers this morning, then a chance of showers with a slight chance of thunderstorms this afternoon. Some thunderstorms may produce heavy rainfall this afternoon. Highs in the upper 50s. North winds 10 to 15 mph. Chance of rain 80 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. North winds around 10 mph in the evening. .MONDAY...Mostly sunny. Highs in the lower 60s. South winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. South winds around 10 mph. .TUESDAY...Mostly sunny. Highs around 70. South winds around 10 mph. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the upper 40s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny. Highs in the mid 70s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. .SATURDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ008-202200- Bighorn Mountains West- 817 AM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...Patchy fog this morning. Rain showers with a slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Highs around 50. Northwest winds around 10 mph. Chance of rain 80 percent. .TONIGHT...Mostly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows around 40. Northwest winds around 10 mph in the evening. Chance of rain 30 percent. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 50s. Southwest winds around 10 mph in the afternoon. .MONDAY NIGHT...Clear. Lows in the lower 40s. Southeast winds 10 to 15 mph. .TUESDAY...Mostly sunny. Highs in the mid 60s. South winds around 10 mph with gusts up to 20 mph. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms after midnight. Lows in the upper 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Sunny. Highs in the upper 60s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs in the upper 60s. .FRIDAY NIGHT...Mostly clear. Lows around 50. .SATURDAY...Mostly sunny. Highs in the upper 60s. $$ WYZ009-202200- Bighorn Mountains Southeast- 817 AM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .TODAY...A slight chance of thunderstorms. Rain showers. Some thunderstorms may produce heavy rainfall. Highs around 50. Northwest winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .TONIGHT...Mostly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows in the upper 30s. Northwest winds around 10 mph in the evening. Chance of rain 30 percent. .MONDAY...Partly cloudy. A chance of rain showers in the afternoon. Highs in the upper 50s. South winds around 10 mph in the afternoon. Chance of rain 40 percent. .MONDAY NIGHT...Mostly clear. Lows in the lower 40s. South winds around 10 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny. Highs in the mid 60s. Southwest winds around 10 mph with gusts up to 20 mph. .TUESDAY NIGHT...Partly cloudy with a slight chance of rain showers and thunderstorms. Lows in the mid 40s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Sunny. Highs in the upper 60s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. .SATURDAY...Mostly sunny. Highs in the upper 60s. $$ WYZ012-202200- Teton and Gros Ventre Mountains- 817 AM MDT Sun Sep 20 2026 .TODAY...Partly cloudy. Areas of fog this morning. A slight chance of. A slight chance of. Highs in the lower 50s. Northwest winds around 10 mph with gusts up to 20 mph this afternoon. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. North winds around 10 mph in the evening. .MONDAY...Mostly sunny. Highs in the upper 50s. Southwest winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. South winds around 10 mph, becoming east after midnight. .TUESDAY...Partly cloudy. Highs in the lower 60s. Southwest winds around 10 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs around 60. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs in the mid 60s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 40s. .SATURDAY...Partly cloudy. A slight chance of. Highs in the lower 60s. $$ WYZ014-202200- Wind River Mountains West- 817 AM MDT Sun Sep 20 2026 .TODAY...Partly cloudy. Areas of fog this morning. A chance of rain showers with a slight chance of thunderstorms this afternoon. Highs in the lower 50s. West winds around 10 mph with gusts up to 20 mph this afternoon. Chance of rain 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. North winds around 10 mph in the evening. .MONDAY...Mostly sunny. Highs in the mid 50s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. .TUESDAY...Partly cloudy. Highs in the upper 50s. Southwest winds 10 to 15 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of rain showers with a slight chance of thunderstorms. Lows in the upper 30s. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A chance of rain showers. Highs in the upper 50s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 30s. .THURSDAY...Sunny. Highs around 60. .THURSDAY NIGHT...Mostly clear. Lows in the upper 30s. .FRIDAY...Mostly sunny. Highs around 60. .FRIDAY NIGHT...Mostly clear. Lows in the upper 30s. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 50s. $$ WYZ015-202200- Wind River Mountains East- 817 AM MDT Sun Sep 20 2026 .TODAY...Partly cloudy this morning, then mostly cloudy with rain showers likely with possible snow showers and thunderstorms this afternoon. Snow accumulation up to 1 inch. Highs in the upper 40s. North winds around 10 mph with gusts up to 20 mph this afternoon. Chance of precipitation 60 percent. .TONIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 30s. Chance of rain 30 percent. .MONDAY...Mostly sunny. Highs in the lower 50s. South winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. Southwest winds around 10 mph after midnight. .TUESDAY...Partly cloudy. A slight chance of. Highs in the upper 50s. Southwest winds around 10 mph with gusts up to 20 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of rain showers with a slight chance of thunderstorms. Lows in the upper 30s. Chance of rain 50 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A chance of rain showers. Highs in the mid 50s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the upper 50s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 30s. .FRIDAY...Mostly sunny. Highs in the upper 50s. .FRIDAY NIGHT...Mostly clear and breezy. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Breezy with highs in the upper 50s. $$ WYZ019-202200- Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly cloudy this morning, then becoming partly cloudy. Areas of fog this morning. A slight chance of thunderstorms. Showers likely, mainly this morning. Highs around 60. West winds around 10 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Partly cloudy. Lows in the upper 30s. Gusts up to 20 mph in the evening. .MONDAY...Mostly sunny. Highs in the mid 60s. Southwest winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows around 40. .TUESDAY...Mostly sunny. Highs around 70. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 40s. .THURSDAY...Mostly sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the mid 40s. .FRIDAY...Mostly sunny. Highs in the lower 70s. .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. $$ WYZ024-202200- Salt River and Wyoming Ranges- 817 AM MDT Sun Sep 20 2026 .TODAY...Mostly sunny this morning, then becoming partly cloudy. Highs in the upper 50s. Northwest winds around 10 mph with gusts up to 20 mph this afternoon. .TONIGHT...Mostly clear. Lows in the mid 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Mostly sunny. Highs in the lower 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s. South winds around 10 mph in the evening. .TUESDAY...Partly cloudy. A slight chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 20 percent. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of rain showers with a slight chance of thunderstorms. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs in the mid 60s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 40s. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 60s. $$ WYZ030-202200- East Sweetwater County- Including the city of Wamsutter 817 AM MDT Sun Sep 20 2026 .TODAY...Partly cloudy this morning, then clearing. Areas of fog this morning. Highs around 60. West winds around 10 mph. .TONIGHT...Mostly clear. Lows in the upper 30s. .MONDAY...Mostly sunny. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear. Lows around 40. .TUESDAY...Mostly sunny. Highs around 70. Southeast winds around 10 mph, becoming southwest with gusts up to 25 mph in the afternoon. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the lower 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 40s. .THURSDAY...Mostly sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows in the mid 40s. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SATURDAY...Partly cloudy in the morning, then clearing. Highs around 70. $$