Zone Forecast Product
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
469 FPUS55 KRIW 202019 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 217 PM MDT Sun Sep 20 2026 WYZ020-202200- Natrona County Lower Elevations- Including the city of Casper 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy with showers likely with a chance of thunderstorms. Highs in the lower 60s. Northwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Areas of fog after midnight. Lows around 40. Northwest 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. Areas of fog in the morning. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear. Lows around 40. East winds around 10 mph, becoming southeast after midnight. Gusts up to 25 mph. .TUESDAY...Mostly sunny. Highs in the lower 70s. Southwest winds around 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 50. .WEDNESDAY...Mostly sunny and breezy. Highs in the lower 70s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 40s. .THURSDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the upper 70s. .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. .SATURDAY...Mostly sunny and breezy. Highs in the mid 70s. $$ WYZ017-202200- Wind River Basin- Including the cities of Riverton and Shoshoni 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the lower 60s. North winds around 10 mph with gusts up to 20 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy. Lows in the lower 40s. .MONDAY...Partly cloudy in the morning, then clearing. Areas of fog in the morning. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. East winds around 10 mph, becoming south after midnight. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. South winds around 10 mph with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows around 50. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the lower 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Mostly sunny. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Mostly clear. Lows around 50. .SATURDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ018-202200- Lander Foothills- Including the city of Lander 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the mid 60s. Chance of rain 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .MONDAY...Areas of fog in the morning. Mostly sunny. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s. .TUESDAY...Partly cloudy. Highs in the lower 70s. South winds around 10 mph with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the lower 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Mostly sunny. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. .SATURDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ028-202200- Rock Springs and Green River- Including the cities of Rock Springs and Green River 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Sunny. Near steady temperature in the lower 60s. .TONIGHT...Mostly clear. Lows in the mid 30s. .MONDAY...Areas of fog in the morning. Mostly sunny. Highs in the upper 60s. .MONDAY NIGHT...Partly cloudy. Lows around 40. .TUESDAY...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs around 70. West winds around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows around 40. Chance of rain 50 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs around 70. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .THURSDAY...Mostly sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the mid 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SATURDAY...Mostly sunny. A slight chance of. Highs in the lower 70s. $$ WYZ013-202200- Jackson Hole- Including the city of Jackson 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy. Highs in the upper 50s. .TONIGHT...Mostly clear. Areas of fog. Lows in the lower 30s. .MONDAY...Areas of fog in the morning. 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 with showers likely with a slight chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows around 40. Chance of rain 60 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .SATURDAY...Mostly sunny with a slight chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 20 percent. $$ WYZ003-202200- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Near steady temperature in the upper 50s. Northeast winds around 10 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 40s. .MONDAY...Mostly sunny. Highs in the mid 60s. Southeast winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. South winds around 10 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny. Highs in the lower 70s. Southwest winds around 10 mph, becoming southeast in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows around 50. Chance of rain 50 percent. .WEDNESDAY...Mostly sunny. A chance of showers in the morning. Highs in the lower 70s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Mostly sunny. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Partly cloudy. Lows around 50. .SATURDAY...Partly cloudy in the morning, then clearing. Highs around 70. $$ WYZ004-202200- North Bighorn Basin- Including the cities of Basin, Greybull, Lovell, Powell, and Shell 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the mid 60s. North winds around 10 mph with gusts up to 20 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Areas of fog after midnight. Lows in the lower 40s. Northwest winds around 10 mph in the evening. .MONDAY...Partly cloudy in the morning, then clearing. Areas of fog in the morning. 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 mid 70s. Southeast 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 chance of showers. Lows around 50. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Mostly sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs around 80. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 50. .SATURDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ006-202200- Southeast Bighorn Basin- Including the cities of Ten Sleep and Worland 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the lower 60s. Northwest winds around 10 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Areas of fog after midnight. Lows in the lower 40s. .MONDAY...Partly cloudy in the morning, then clearing. Areas of fog in the morning. Highs around 70. .MONDAY NIGHT...Clear. Lows in the mid 40s. Southeast winds around 10 mph. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows around 50. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Mostly sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs in the lower 80s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. .SATURDAY...Mostly sunny. Highs in the upper 70s. $$ WYZ005-202200- Southwest Bighorn Basin- Including the city of Thermopolis 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the lower 60s. North winds around 10 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 40s. .MONDAY...Mostly sunny. Highs around 70. Southeast winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. Southwest winds around 10 mph after midnight. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. Southwest winds around 10 mph, becoming south in the afternoon. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows around 50. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Mostly sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs around 80. .FRIDAY NIGHT...Mostly clear. Lows around 50. .SATURDAY...Mostly sunny. Highs in the upper 70s. $$ WYZ023-202200- Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy. Highs in the lower 60s. .TONIGHT...Mostly clear. Areas of fog after midnight. Lows in the lower 30s. .MONDAY...Areas of fog in the morning. Mostly sunny. Highs around 70. .MONDAY NIGHT...Partly cloudy. Lows in the mid 30s. .TUESDAY...Partly cloudy in the morning, then mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the afternoon. Highs around 70. Chance of rain 30 percent. .TUESDAY NIGHT...Mostly cloudy with showers likely with a slight chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the upper 30s. Chance of rain 60 percent. .WEDNESDAY...Mostly sunny. Highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the lower 70s. .FRIDAY NIGHT...Mostly clear. Lows around 40. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 60s. $$ WYZ025-202200- Upper Green River Basin Foothills- Including the city of Pinedale 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy. Highs around 60. Northwest winds around 10 mph with gusts up to 20 mph. .TONIGHT...Mostly clear. Areas of fog after midnight. Lows in the lower 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Areas of fog in the morning. Mostly sunny. Highs in the lower 60s. .MONDAY NIGHT...Partly cloudy. Lows in the mid 30s. .TUESDAY...Partly cloudy in the morning, then becoming mostly cloudy. A slight chance of. Highs in the mid 60s. .TUESDAY NIGHT...Mostly cloudy with showers likely with a slight chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the upper 30s. Chance of rain 60 percent. .WEDNESDAY...Mostly sunny. Highs in the mid 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 30s. .THURSDAY...Mostly sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows in the upper 30s. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY...Mostly sunny. A slight chance of. Highs in the mid 60s. $$ WYZ026-202200- Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly sunny. Highs in the lower 60s. West winds around 10 mph with gusts up to 20 mph. .TONIGHT...Mostly clear. Areas of fog after midnight. Lows in the lower 30s. Northwest winds around 10 mph in the evening. .MONDAY...Areas of fog in the morning. Mostly sunny. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. .TUESDAY...Partly cloudy. A slight chance of. Highs in the upper 60s. .TUESDAY NIGHT...Mostly cloudy with showers likely with a slight chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the mid 30s. Chance of rain 60 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 30s. .THURSDAY...Mostly sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs around 70. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .SATURDAY...Mostly sunny. Highs around 70. $$ WYZ010-202200- Northeast Johnson County- Including the city of Buffalo 217 PM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .THIS AFTERNOON...Showers likely with a chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Highs around 60. Northwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Cloudy. Showers with a slight chance of thunderstorms in the evening. Areas of fog after midnight. Lows in the mid 40s. Northwest winds around 10 mph with gusts up to 25 mph in the evening. Chance of rain 80 percent. .MONDAY...Mostly cloudy in the morning, then clearing. Areas of fog in the morning. 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 30 mph. .TUESDAY...Mostly sunny. Highs in the mid 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 showers. Lows in the lower 50s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny. A slight chance of. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Partly cloudy in the morning, then clearing. 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 lower 50s. .SATURDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ011-202200- Southeast Johnson County- Including the city of Kaycee 217 PM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .THIS AFTERNOON...Showers likely with a chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Highs in the lower 60s. Northwest winds around 10 mph with gusts up to 25 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy. Showers likely with a slight chance of thunderstorms in the evening. Areas of fog after midnight. Lows in the mid 40s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 60 percent. .MONDAY...Mostly cloudy in the morning, then clearing. Areas of fog in the morning. Highs in the upper 60s. South winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. South winds 10 to 15 mph with gusts up to 30 mph. .TUESDAY...Mostly sunny. Highs in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 50. .WEDNESDAY...Mostly sunny. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. .THURSDAY...Partly cloudy in the morning, then clearing. Highs in the upper 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny and breezy. Highs around 80. .FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. .SATURDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ027-202200- South Lincoln County- Including the cities of Kemmerer and Cokeville 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly sunny. Near steady temperature in the upper 50s. West winds around 10 mph with gusts up to 20 mph. .TONIGHT...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 mid 60s. .MONDAY NIGHT...Partly cloudy. Lows in the upper 30s. .TUESDAY...Partly cloudy. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40 percent. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the upper 30s. Chance of rain 40 percent. .WEDNESDAY...Mostly sunny. Highs in the mid 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the lower 70s. .FRIDAY NIGHT...Mostly clear. Lows around 40. .SATURDAY...Mostly sunny. Highs around 70. $$ WYZ016-202200- Upper Wind River Basin- Including the city of Dubois 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers with a slight chance of thunderstorms. Near steady temperature in the mid 50s. Southeast winds around 10 mph with gusts up to 20 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Areas of fog after midnight. Lows in the upper 30s. East winds around 10 mph in the evening. Chance of rain 30 percent. .MONDAY...Mostly sunny. Highs around 60. Southeast winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows around 40. Southeast winds around 10 mph with gusts up to 20 mph, becoming northwest after midnight. .TUESDAY...Partly cloudy. Highs in the mid 60s. West winds around 10 mph, becoming southwest with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows in the lower 40s. Chance of rain 50 percent. .WEDNESDAY...Mostly sunny. A slight chance of. Highs in the mid 60s. .WEDNESDAY NIGHT...Mostly clear. Lows around 40. .THURSDAY...Mostly sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows in the mid 40s. .FRIDAY...Mostly sunny. Highs in the lower 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SATURDAY...Mostly sunny. A slight chance of. Highs in the upper 60s. $$ WYZ001-202200- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy. Highs in the lower 50s. .TONIGHT...Partly cloudy in the evening, then clearing. Areas of fog after midnight. Lows in the lower 30s. .MONDAY...Areas of fog in the morning. Mostly sunny. Highs around 60. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. .TUESDAY...Partly cloudy. Highs in the lower 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms. Lows in the upper 30s. Chance of rain 50 percent. .WEDNESDAY...Mostly sunny. Highs around 60. .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...Partly cloudy in the evening, then clearing. A slight chance of. Lows in the upper 30s. .SATURDAY...Partly cloudy. A chance of rain and snow showers in the morning, then a slight chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 30 percent. $$ WYZ029-202200- Flaming Gorge- 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Sunny. Highs in the mid 60s. West winds around 10 mph. .TONIGHT...Mostly clear. Lows around 40. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .MONDAY NIGHT...Partly cloudy. Lows in the mid 40s. .TUESDAY...Partly cloudy. A slight chance of. Highs around 70. South winds around 10 mph, becoming southwest in the afternoon. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 40s. Chance of rain 40 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 60s. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .THURSDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 40s. .SATURDAY...Mostly sunny. A slight chance of. Highs in the mid 70s. $$ WYZ022-202200- Casper Mountain- 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Showers likely with a slight chance of thunderstorms. Highs in the mid 50s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 30s. Northwest 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 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...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 40s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the mid 60s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 40s. .THURSDAY...Partly cloudy. Highs in the upper 60s. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs around 70. .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. .SATURDAY...Mostly sunny. Highs in the upper 60s. $$ WYZ002-202200- Absaroka Mountains- 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Near steady temperature in the upper 40s. Northwest winds around 10 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 30s. Chance of rain 30 percent. .MONDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 50s. South winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the upper 30s. South winds around 10 mph with gusts up to 20 mph, becoming west after midnight. .TUESDAY...Partly cloudy. Highs in the upper 50s. Southwest winds around 10 mph with gusts up to 20 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms. A chance of rain showers in the evening, then rain showers likely after midnight. Lows around 40. Chance of rain 60 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. Highs in the lower 60s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny and breezy. Highs in the lower 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows in the lower 40s. .SATURDAY...Mostly sunny with a slight chance of rain and snow showers. A slight chance of thunderstorms in the afternoon. Breezy with highs in the mid 50s. Chance of precipitation 20 percent. $$ WYZ007-202200- Owl Creek and Bridger Mountains- 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the upper 50s. North winds around 10 mph with gusts up to 20 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 40s. .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...Partly cloudy in the morning, then clearing. Highs in the upper 60s. South winds around 10 mph. .TUESDAY 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. .WEDNESDAY...Mostly sunny. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Mostly sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs in the mid 70s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. .SATURDAY...Mostly sunny. Highs in the lower 70s. $$ WYZ008-202200- Bighorn Mountains West- 217 PM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .THIS AFTERNOON...Rain showers likely with a slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Highs in the lower 50s. Northwest winds around 10 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Patchy fog after midnight. Lows in the upper 30s. Northwest winds around 10 mph in the evening. Chance of rain 30 percent. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 50s. Southwest winds around 10 mph in the afternoon. .MONDAY NIGHT...Clear. Lows in the lower 40s. Southeast winds around 10 mph. .TUESDAY...Mostly sunny. Highs in the mid 60s. South winds around 10 mph, becoming southwest with gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of rain showers. Lows in the upper 40s. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. A chance of rain showers in the morning. Highs in the lower 60s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Mostly sunny. Highs in the upper 60s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs in the upper 60s. .FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. .SATURDAY...Mostly sunny. Highs in the mid 60s. $$ WYZ009-202200- Bighorn Mountains Southeast- 217 PM MDT Sun Sep 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 6 PM MDT THIS EVENING... .THIS AFTERNOON...Rain showers with a slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Near steady temperature in the upper 40s. Northwest winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .TONIGHT...Patchy fog in the evening. Mostly cloudy with rain showers likely with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 30s. Northwest winds around 10 mph. Chance of rain 60 percent. .MONDAY...Partly cloudy. A slight chance of. Highs in the upper 50s. South winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the lower 40s. South winds around 10 mph, becoming west after midnight. .TUESDAY...Mostly sunny. Highs in the mid 60s. Southwest winds around 10 mph. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of rain showers. Lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny with a chance of rain showers. A slight chance of thunderstorms in the afternoon. Breezy with highs in the lower 60s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s. .THURSDAY...Partly cloudy in the morning, then clearing. 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 in the upper 40s. .SATURDAY...Mostly sunny. Highs in the mid 60s. $$ WYZ012-202200- Teton and Gros Ventre Mountains- 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy. Highs in the lower 50s. Northwest winds around 10 mph. .TONIGHT...Partly cloudy in the evening, then clearing. Areas of fog after midnight. Lows in the lower 30s. .MONDAY...Areas of fog in the morning. Mostly sunny. Highs in the upper 50s. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. South winds around 10 mph, becoming east after midnight. .TUESDAY...Partly cloudy. Highs around 60. Southwest winds around 10 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. Rain showers likely. Lows in the upper 30s. Chance of rain 60 percent. .WEDNESDAY...Mostly sunny with a slight chance of rain showers. Highs in the upper 50s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the lower 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .SATURDAY...Partly cloudy in the morning, then clearing. A slight chance of rain and snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 20 percent. $$ WYZ014-202200- Wind River Mountains West- 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy with a chance of rain showers with a slight chance of thunderstorms. Near steady temperature in the upper 40s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy in the evening, then clearing. Areas of fog after midnight. Lows in the lower 30s. North winds around 10 mph in the evening. .MONDAY...Areas of fog in the morning. Mostly sunny. Highs in the mid 50s. Southwest winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. .TUESDAY...Partly cloudy. A slight chance of. Highs in the upper 50s. Southwest winds around 10 mph. Gusts up to 25 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. Rain showers likely. Lows in the upper 30s. Chance of rain 70 percent. .WEDNESDAY...Mostly sunny with a slight chance of rain showers. Highs in the mid 50s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. Highs around 60. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs around 60. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY...Mostly sunny. A slight chance of rain showers and thunderstorms in the afternoon. Breezy with highs in the upper 50s. Chance of rain 20 percent. $$ WYZ015-202200- Wind River Mountains East- 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly cloudy with a chance of rain showers, a slight chance of thunderstorms and snow showers. Little or no snow accumulation. Near steady temperature in the mid 40s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of precipitation 50 percent. .TONIGHT...Partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Areas of fog in the evening. Patchy fog after midnight. Lows in the lower 30s. Chance of rain 30 percent. .MONDAY...Mostly sunny. Highs in the lower 50s. South winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. Southwest winds around 10 mph after midnight. .TUESDAY...Partly cloudy. A slight chance of. Highs in the mid 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Rain showers likely. A slight chance of thunderstorms in the evening, then snow showers likely after midnight. Little or no snow accumulation. Lows in the upper 30s. Chance of precipitation 60 percent. .WEDNESDAY...Mostly sunny. Highs in the mid 50s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. Highs in the upper 50s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny and breezy. Highs in the upper 50s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows around 40. .SATURDAY...Mostly sunny. A slight chance of. Breezy with highs in the upper 50s. $$ WYZ019-202200- Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers with a slight chance of thunderstorms. Highs around 60. Northwest winds around 10 mph with gusts up to 30 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy. Lows in the upper 30s. North winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Partly cloudy in the morning, then clearing. Areas of fog in the morning. Highs in the mid 60s. Southwest winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 40. .TUESDAY...Partly cloudy in the morning, then clearing. Highs around 70. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the lower 40s. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 60s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 40s. .THURSDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the mid 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the lower 70s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 40s. .SATURDAY...Mostly sunny and breezy. Highs in the lower 70s. $$ WYZ024-202200- Salt River and Wyoming Ranges- 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Partly cloudy. Highs in the upper 50s. Northwest winds around 10 mph with gusts up to 25 mph. .TONIGHT...Mostly clear. Lows in the mid 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Mostly sunny. Highs in the lower 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Partly cloudy. Lows in the upper 30s. South winds around 10 mph, becoming east after midnight. .TUESDAY...Partly cloudy in the morning, then mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 40 percent. .TUESDAY NIGHT...Mostly cloudy with rain showers likely with a slight chance of thunderstorms in the evening, then partly cloudy with a chance of rain showers after midnight. Lows in the upper 30s. Chance of rain 60 percent. .WEDNESDAY...Mostly sunny. Highs in the lower 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the mid 60s. .FRIDAY NIGHT...Mostly clear. Lows in the lower 40s. .SATURDAY...Mostly sunny. A slight chance of. Highs in the lower 60s. $$ WYZ030-202200- East Sweetwater County- Including the city of Wamsutter 217 PM MDT Sun Sep 20 2026 .THIS AFTERNOON...Mostly sunny. Highs in the lower 60s. West winds around 10 mph with gusts up to 20 mph. .TONIGHT...Mostly clear. Areas of fog after midnight. Lows in the upper 30s. .MONDAY...Partly cloudy in the morning, then clearing. Areas of fog in the morning. Highs in the mid 60s. .MONDAY NIGHT...Partly cloudy. Lows in the upper 30s. .TUESDAY...Partly cloudy. Highs around 70. South winds around 10 mph, becoming southwest 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 mid 60s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 40s. .THURSDAY...Partly cloudy in the morning, then clearing. Highs around 70. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SATURDAY...Mostly sunny. Highs around 70. $$