Zone Forecast Product
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
628 FPUS55 KRIW 192119 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 317 PM MDT Sat Sep 19 2026 WYZ020-192230- Natrona County Lower Elevations- Including the city of Casper 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the upper 60s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 30 percent. .TONIGHT...Showers with a chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the mid 40s. Northwest winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .SUNDAY...Mostly cloudy with showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 60 percent. .SUNDAY NIGHT...Mostly cloudy. Lows around 40. North winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows in the lower 40s. .TUESDAY...Mostly sunny. Highs in the mid 70s. .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 around 50. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy and breezy. 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...Partly cloudy in the morning, then clearing. Highs in the upper 70s. $$ WYZ017-192230- Wind River Basin- Including the cities of Riverton and Shoshoni 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the upper 60s. Northwest winds around 10 mph with gusts up to 20 mph. Chance of rain 60 percent. .TONIGHT...Showers with a chance of thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Areas of fog after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the mid 40s. North winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of rain 80 percent. .SUNDAY...Mostly cloudy in the morning, then becoming partly cloudy. Areas of fog in the morning. A chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Northwest winds around 10 mph, becoming north with gusts up to 20 mph in the afternoon. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 40s. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows around 50. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Sunny. Highs in the upper 70s. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the upper 70s. $$ WYZ018-192230- Lander Foothills- Including the city of Lander 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Highs in the upper 60s. North winds around 10 mph. Chance of rain 70 percent. .TONIGHT...Showers with a chance of thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Areas of fog after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the lower 40s. North winds around 10 mph in the evening. Chance of rain 80 percent. .SUNDAY...Mostly cloudy in the morning, then becoming partly cloudy. Areas of fog in the morning. A chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. .SUNDAY NIGHT...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. .TUESDAY...Mostly sunny. Highs in the mid 70s. .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 upper 40s. .THURSDAY...Sunny. Highs in the upper 70s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the upper 70s. $$ WYZ028-192230- Rock Springs and Green River- Including the cities of Rock Springs and Green River 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Highs in the mid 60s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .TONIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Some thunderstorms may produce gusty winds and small hail in the evening. Lows in the mid 30s. West winds around 10 mph. Chance of rain 30 percent. .SUNDAY...Mostly sunny. Highs in the lower 60s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows in the mid 30s. Southwest winds around 10 mph in the evening. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 40. .TUESDAY...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs around 70. Chance of rain 30 percent. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows around 40. .THURSDAY...Mostly sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 70s. $$ WYZ013-192230- Jackson Hole- Including the city of Jackson 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Mostly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Highs around 60. Chance of rain 60 percent. .TONIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of rain showers. Areas of fog. Some thunderstorms may produce gusty winds and small hail in the evening. Lows in the mid 30s. Chance of rain 30 percent. .SUNDAY...Mostly cloudy in the morning, then becoming partly cloudy. Areas of fog in the morning. A slight chance of. A slight chance of. Highs in the lower 60s. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 30s. .MONDAY...Mostly sunny. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows in the upper 30s. .TUESDAY...Partly cloudy. Highs in the lower 70s. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. $$ WYZ003-192230- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 317 PM MDT Sat Sep 19 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall. Breezy. Near steady temperature in the mid 50s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent. .TONIGHT...Cloudy. Showers likely with a slight chance of thunderstorms in the evening, then showers after midnight. Areas of fog after midnight. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall in the evening. Breezy with lows in the mid 40s. North winds 15 to 20 mph, becoming northwest around 10 mph after midnight. Chance of rain 80 percent. .SUNDAY...Areas of fog in the morning. Mostly cloudy with showers likely. A slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Highs in the upper 50s. Northeast winds around 10 mph in the afternoon. Chance of rain 60 percent. .SUNDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the mid 40s. Northwest winds around 10 mph in the evening. .MONDAY...Mostly sunny. Highs in the mid 60s. East winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. .TUESDAY...Mostly sunny. Highs in the lower 70s. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 50s. Chance of rain 20 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs in the lower 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Sunny. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. $$ WYZ004-192230- North Bighorn Basin- Including the cities of Basin, Greybull, Lovell, Powell, and Shell 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Breezy. Near steady temperature in the lower 60s. Northwest winds 20 to 25 mph with gusts up to 35 mph. Chance of rain 80 percent. .TONIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with showers likely. Some thunderstorms may produce gusty winds and small hail in the evening. Breezy with lows in the mid 40s. Northwest winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 60 percent. .SUNDAY...Mostly cloudy. Showers likely in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 60 percent. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 40s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Partly cloudy in the morning, then clearing. Highs around 70. Southeast winds around 10 mph in the afternoon. .MONDAY NIGHT...Clear. Lows in the mid 40s. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows around 50. Chance of rain 30 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Sunny. Highs around 80. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs around 80. $$ WYZ006-192230- Southeast Bighorn Basin- Including the cities of Ten Sleep and Worland 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Breezy. Near steady temperature in the lower 60s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent. .TONIGHT...A chance of thunderstorms in the evening. Showers. Some thunderstorms may produce gusty winds and small hail in the evening. Breezy with lows in the mid 40s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent. .SUNDAY...Mostly cloudy. Showers likely in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Northwest winds around 10 mph. Chance of rain 60 percent. .SUNDAY NIGHT...Mostly cloudy. Lows in the mid 40s. .MONDAY...Partly cloudy in the morning, then clearing. Highs around 70. .MONDAY NIGHT...Clear. Lows in the mid 40s. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the lower 50s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers in the morning. Highs in the upper 70s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Sunny. Highs in the lower 80s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs in the lower 80s. $$ WYZ005-192230- Southwest Bighorn Basin- Including the city of Thermopolis 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the lower 60s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 80 percent. .TONIGHT...Showers likely with a chance of thunderstorms in the evening, then showers after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Breezy with lows in the mid 40s. Northwest 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 80 percent. .SUNDAY...Mostly cloudy. Showers likely in the morning. Areas of fog in the morning. Highs in the lower 60s. North winds around 10 mph. Chance of rain 60 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 40s. .MONDAY...Mostly sunny. Highs around 70. .MONDAY NIGHT...Clear. Lows in the mid 40s. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the lower 50s. 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 around 80. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Mostly sunny. Highs around 80. $$ WYZ023-192230- Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Mostly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the upper 50s. Chance of rain 60 percent. .TONIGHT...Mostly cloudy with rain showers likely with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Areas of fog. Some thunderstorms may produce gusty winds and small hail in the evening. Lows in the lower 30s. Chance of rain 60 percent. .SUNDAY...Areas of fog in the morning. Partly cloudy. Highs in the mid 60s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 30s. .MONDAY...Sunny. Highs around 70. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s. .TUESDAY...Partly cloudy. A slight chance of. Highs in the lower 70s. .TUESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 40s. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy with a chance of showers in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs around 70. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the mid 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the mid 70s. $$ WYZ025-192230- Upper Green River Basin Foothills- Including the city of Pinedale 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the upper 50s. Chance of rain 50 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A chance of rain showers. Areas of fog after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Lows in the lower 30s. Northwest winds around 10 mph. Chance of rain 30 percent. .SUNDAY...Areas of fog in the morning. Partly cloudy. Highs around 60. Northwest winds around 10 mph with gusts up to 20 mph in the afternoon. .SUNDAY NIGHT...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 with a chance of showers with a slight chance of thunderstorms. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Mostly cloudy in the morning, then clearing. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 30s. .THURSDAY...Sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s. .FRIDAY...Mostly sunny. A slight chance of. Highs around 70. $$ WYZ026-192230- Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the upper 50s. Northwest winds around 10 mph with gusts up to 20 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A chance of rain showers. Areas of fog after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Lows in the lower 30s. Northwest winds around 10 mph. Chance of rain 30 percent. .SUNDAY...Areas of fog in the morning. Partly cloudy. Highs around 60. Gusts up to 20 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .MONDAY...Mostly sunny. Highs in the mid 60s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. .TUESDAY...Partly cloudy. Highs in the upper 60s. .TUESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows around 40. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 30s. .THURSDAY...Sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 40. .FRIDAY...Partly cloudy in the morning, then clearing. Highs around 70. $$ WYZ010-192230- Northeast Johnson County- Including the city of Buffalo 317 PM MDT Sat Sep 19 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall. Near steady temperature in the lower 60s. North winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .TONIGHT...Mostly cloudy with showers likely. A chance of thunderstorms, mainly in the evening. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows around 50. Northwest winds 10 to 15 mph. Chance of rain 60 percent. .SUNDAY...Showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Some thunderstorms may produce heavy rainfall in the afternoon. Highs in the lower 60s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 80 percent. .SUNDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows around 50. Northwest winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 30 percent. .MONDAY...Mostly cloudy in the morning, then clearing. Highs in the upper 60s. South winds around 10 mph. .MONDAY NIGHT...Mostly clear. Lows around 50. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of. Lows in the lower 50s. .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 in the mid 50s. .FRIDAY...Partly cloudy in the morning, then clearing. Breezy with highs around 80. $$ WYZ011-192230- Southeast Johnson County- Including the city of Kaycee 317 PM MDT Sat Sep 19 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall. Near steady temperature in the mid 60s. North winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .TONIGHT...Showers with a chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows around 50. North winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 80 percent. .SUNDAY...Showers likely with a slight chance of thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Some thunderstorms may produce heavy rainfall in the afternoon. Highs in the lower 60s. North winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .SUNDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 40s. North winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 30 percent. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly clear. Lows around 50. .THURSDAY...Sunny. Highs in the lower 80s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the lower 80s. $$ WYZ027-192230- South Lincoln County- Including the cities of Kemmerer and Cokeville 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the upper 50s. West winds 10 to 15 mph. Chance of rain 30 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 produce gusty winds and small hail in the evening. Lows in the lower 30s. Northwest winds around 10 mph. Chance of rain 30 percent. .SUNDAY...Areas of fog in the morning. Mostly sunny. Highs in the lower 60s. West winds around 10 mph. .SUNDAY NIGHT...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 around 70. Chance of rain 30 percent. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows around 40. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. $$ WYZ016-192230- Upper Wind River Basin- Including the city of Dubois 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the upper 50s. Northwest winds around 10 mph with gusts up to 20 mph. Chance of rain 60 percent. .TONIGHT...Rain showers with a chance of thunderstorms in the evening, then rain showers likely with a slight chance of thunderstorms after midnight. Areas of fog after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows around 40. Northwest winds around 10 mph in the evening. Chance of rain 80 percent. .SUNDAY...Areas of fog in the morning. Partly cloudy with a chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs around 60. East winds around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 30 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows around 40. 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. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 60s. .TUESDAY 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 mid 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 40s. .THURSDAY...Sunny. Highs around 70. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s. .FRIDAY...Mostly sunny. Highs around 70. $$ WYZ001-192230- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 317 PM MDT Sat Sep 19 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall. Near steady temperature in the upper 40s. Chance of rain 80 percent. .TONIGHT...Cloudy. Rain showers likely with a slight chance of thunderstorms in the evening, then a chance of rain showers after midnight. Areas of fog. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall in the evening. Lows in the mid 30s. Chance of rain 60 percent. .SUNDAY...Areas of fog in the morning. Mostly cloudy with a chance of rain showers. A slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Highs in the mid 50s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 30s. .MONDAY...Partly cloudy in the morning, then clearing. 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. .TUESDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A chance of rain showers after midnight. Lows in the upper 30s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A chance of rain showers with 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 30s. .THURSDAY...Mostly sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 30s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the mid 60s. $$ WYZ029-192230- Flaming Gorge- 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Highs in the lower 60s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .TONIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Lows around 40. West winds around 10 mph in the evening. Chance of rain 30 percent. .SUNDAY...Mostly sunny. Highs in the lower 60s. West winds around 10 mph. .SUNDAY NIGHT...Mostly clear. Lows around 40. .MONDAY...Mostly sunny. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s. .TUESDAY...Partly cloudy. A slight chance of. Highs in the lower 70s. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows in the mid 40s. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Mostly sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. .FRIDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the lower 70s. $$ WYZ022-192230- Casper Mountain- 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the lower 60s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 30 percent. .TONIGHT...Showers with a chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the lower 40s. Northwest winds around 10 mph. Chance of rain 80 percent. .SUNDAY...Showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Highs in the mid 50s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 60 percent. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. .MONDAY NIGHT...Mostly clear. Lows in the lower 40s. .TUESDAY...Mostly sunny. Highs in the upper 60s. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s. .THURSDAY...Sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. $$ WYZ002-192230- Absaroka Mountains- 317 PM MDT Sat Sep 19 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...Showers, a chance of thunderstorms and snow showers. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall. Snow accumulation up to 1 inch. Near steady temperature in the upper 40s. Northwest winds around 10 mph. Chance of precipitation 80 percent. .TONIGHT...Cloudy with snow showers likely. Rain showers with a slight chance of thunderstorms in the evening, then rain showers likely after midnight. Patchy fog after midnight. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall in the evening. Little or no snow accumulation. Lows in the mid 30s. Northwest winds around 10 mph in the evening. Chance of precipitation 80 percent. .SUNDAY...Cloudy. A chance of rain and snow showers in the morning, then rain showers likely with a slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Snow accumulation up to 1 inch. Highs in the upper 40s. North winds around 10 mph in the afternoon. Chance of precipitation 60 percent. .SUNDAY NIGHT...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. 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. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of rain showers with a slight chance of thunderstorms. Lows in the lower 40s. Chance of rain 30 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. 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...Sunny. Highs in the lower 60s. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. $$ WYZ007-192230- Owl Creek and Bridger Mountains- 317 PM MDT Sat Sep 19 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall. Near steady temperature in the upper 50s. Northwest winds 10 to 15 mph. Chance of rain 80 percent. .TONIGHT...Showers. A chance of thunderstorms, mainly in the evening. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall after midnight. Breezy with lows in the mid 40s. North winds 15 to 20 mph. Chance of rain 80 percent. .SUNDAY...Mostly cloudy with showers likely in the morning, then partly cloudy with a chance of showers with a slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Highs in the mid 50s. North winds around 10 mph. Chance of rain 60 percent. .SUNDAY NIGHT...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 lower 60s. South winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s. .TUESDAY...Mostly sunny. Highs around 70. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the lower 50s. 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...Sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 50s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the mid 70s. $$ WYZ008-192230- Bighorn Mountains West- 317 PM MDT Sat Sep 19 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...Rain showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall. Near steady temperature in the lower 50s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .TONIGHT...Rain showers. A chance of thunderstorms, mainly in the evening. Patchy fog after midnight. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the lower 40s. Northwest winds around 10 mph with gusts up to 20 mph, becoming west after midnight. Chance of rain 80 percent. .SUNDAY...Patchy fog in the morning. A slight chance of thunderstorms. Rain showers. Some thunderstorms may produce heavy rainfall. Highs around 50. West winds around 10 mph. Chance of rain 80 percent. .SUNDAY NIGHT...Mostly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows around 40. Northwest winds around 10 mph in the evening. Chance of rain 30 percent. .MONDAY...Partly cloudy in the morning, then clearing. Highs in the upper 50s. Southwest winds around 10 mph in the afternoon. .MONDAY NIGHT...Clear. Lows in the lower 40s. .TUESDAY...Mostly sunny. Highs in the mid 60s. .TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a chance of rain showers with a slight chance of thunderstorms after midnight. Lows in the upper 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. .THURSDAY...Sunny. Highs in the upper 60s. .THURSDAY NIGHT...Mostly clear. Lows around 50. .FRIDAY...Mostly sunny. Highs in the upper 60s. $$ WYZ009-192230- Bighorn Mountains Southeast- 317 PM MDT Sat Sep 19 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall. Near steady temperature in the mid 50s. Northwest winds around 10 mph. Chance of rain 80 percent. .TONIGHT...Patchy fog in the evening. Rain showers with a chance of thunderstorms in the evening, then rain showers likely with a slight chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds, small hail, and heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the lower 40s. Northwest winds around 10 mph. Chance of rain 80 percent. .SUNDAY...Mostly cloudy with a slight chance of thunderstorms. Rain showers. Some thunderstorms may produce heavy rainfall. Highs around 50. Northwest winds around 10 mph. Chance of rain 80 percent. .SUNDAY NIGHT...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 40 percent. .MONDAY...Partly cloudy in the morning, then mostly sunny with a chance of rain showers in the afternoon. Highs in the upper 50s. South winds around 10 mph in the afternoon. Chance of rain 30 percent. .MONDAY NIGHT...Mostly clear. Lows in the lower 40s. .TUESDAY...Mostly sunny. Highs in the mid 60s. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of rain showers and thunderstorms. Lows in the upper 40s. Chance of rain 20 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40 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...Partly cloudy in the morning, then clearing. Highs in the upper 60s. $$ WYZ012-192230- Teton and Gros Ventre Mountains- 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Mostly cloudy with rain showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the upper 40s. Chance of rain 80 percent. .TONIGHT...Mostly cloudy. Rain showers likely with a slight chance of thunderstorms in the evening, then a chance of rain showers after midnight. Areas of fog after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Lows in the mid 30s. Chance of rain 60 percent. .SUNDAY...Mostly cloudy. Areas of fog in the morning. A slight chance of. A slight chance of. Highs in the lower 50s. Northwest winds around 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .MONDAY...Mostly sunny. Highs in the upper 50s. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. .TUESDAY...Partly cloudy. Highs in the lower 60s. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of rain showers with a slight chance of thunderstorms. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy with a chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly clear. Lows around 40. .FRIDAY...Mostly sunny. Highs in the lower 60s. $$ WYZ014-192230- Wind River Mountains West- 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with rain showers likely, a chance of thunderstorms and snow showers likely. Some thunderstorms may produce gusty winds and small hail. Snow accumulation up to 1 inch. Near steady temperature in the upper 40s. West winds around 10 mph with gusts up to 25 mph. Chance of precipitation 60 percent. .TONIGHT...Mostly cloudy with rain showers likely with a chance of snow showers. A chance of thunderstorms, mainly in the evening. Areas of fog after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Little or no snow accumulation. Lows in the lower 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. Chance of precipitation 60 percent. .SUNDAY...Areas of fog in the morning. 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 50. West winds around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .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. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of rain showers with a slight chance of thunderstorms. Lows in the upper 30s. Chance of rain 40 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. 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...Sunny. Highs in the lower 60s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 30s. .FRIDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs around 60. $$ WYZ015-192230- Wind River Mountains East- 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with rain showers likely, a chance of thunderstorms and snow showers likely. Some thunderstorms may produce gusty winds and small hail. Snow accumulation up to 1 inch. Near steady temperature in the upper 40s. West winds around 10 mph with gusts up to 20 mph. Chance of precipitation 60 percent. .TONIGHT...Mostly cloudy. Rain showers with possible thunderstorms and snow showers in the evening, then rain showers likely with possible snow showers and thunderstorms after midnight. Areas of fog. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Snow accumulation up to 1 inch. Lows in the lower 30s. Chance of precipitation 80 percent. .SUNDAY...Partly cloudy in the morning, then mostly cloudy with rain showers likely with possible snow showers and thunderstorms in the afternoon. Snow accumulation up to 1 inch. Highs in the upper 40s. North winds around 10 mph in the afternoon. Chance of precipitation 60 percent. .SUNDAY NIGHT...Partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 30s. Chance of rain 30 percent. .MONDAY...Mostly sunny. Highs in the lower 50s. Southwest winds around 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 30s. .TUESDAY...Partly cloudy. A slight chance of. Highs in the upper 50s. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of rain showers with a slight chance of thunderstorms. Lows around 40. Chance of rain 40 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Sunny. Highs around 60. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 40. .FRIDAY...Partly cloudy in the morning, then clearing. Highs around 60. $$ WYZ019-192230- Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the mid 60s. West winds around 10 mph with gusts up to 25 mph. Chance of rain 60 percent. .TONIGHT...Showers with a chance of thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows around 40. Northwest winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .SUNDAY...Mostly cloudy in the morning, then becoming partly cloudy. Areas of fog in the morning. A chance of showers. A slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall in the morning. Highs in the upper 50s. Northwest winds around 10 mph with gusts up to 25 mph. Chance of rain 40 percent. .SUNDAY NIGHT...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. Highs in the mid 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows around 40. .TUESDAY...Mostly sunny. Highs in the lower 70s. .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. Breezy with highs around 70. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 40s. .THURSDAY...Sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the lower 70s. $$ WYZ024-192230- Salt River and Wyoming Ranges- 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Partly cloudy with showers likely with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Near steady temperature in the lower 50s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 60 percent. .TONIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Lows in the lower 30s. Northwest winds around 10 mph. Chance of rain 30 percent. .SUNDAY...Partly cloudy. Highs in the mid 50s. Northwest winds around 10 mph with gusts up to 20 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows in the mid 30s. Northwest winds around 10 mph with gusts up to 20 mph in the evening. .MONDAY...Mostly sunny. Highs in the lower 60s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s. .TUESDAY...Partly cloudy. A slight chance of. Highs in the mid 60s. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers with a slight chance of thunderstorms. Lows in the lower 40s. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of rain showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows around 40. .THURSDAY...Sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. .FRIDAY...Mostly sunny. Highs in the mid 60s. $$ WYZ030-192230- East Sweetwater County- Including the city of Wamsutter 317 PM MDT Sat Sep 19 2026 .THIS AFTERNOON...Showers with a chance of thunderstorms. Some thunderstorms may produce gusty winds and small hail. Highs in the mid 60s. West winds around 10 mph with gusts up to 20 mph. Chance of rain 80 percent. .TONIGHT...Mostly cloudy with showers likely. A chance of thunderstorms, mainly in the evening. Patchy fog after midnight. Some thunderstorms may produce gusty winds and small hail in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the upper 30s. West winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 60 percent. .SUNDAY...Partly cloudy in the morning, then clearing. Areas of fog in the morning. Highs around 60. West winds around 10 mph. .SUNDAY NIGHT...Mostly clear. Lows in the upper 30s. .MONDAY...Partly cloudy in the morning, then clearing. 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...Mostly sunny in the morning, then becoming partly cloudy. Highs around 70. .TUESDAY 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 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 in the evening, then becoming partly cloudy. Lows in the mid 40s. .FRIDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs around 70. $$