Don Day's Wyoming Weather Forecast: Tuesday, September 22, 2026

Chance of rain in parts of Wyoming on Tuesday, otherwise mostly sunny. Partly to mostly cloudy overnight with a chance of rain. Highs from the low 60s to upper 70s. Lows from near 30 to mid 50s.

CK
Coy Knobel

September 22, 20265 min read

Teton County
"Fire on the mountain. Sunset on the Teton Range."
"Fire on the mountain. Sunset on the Teton Range." (Reader photo: Steve Isaak)

Chance of rain in parts of Wyoming on Tuesday, otherwise mostly sunny. Partly to mostly cloudy overnight with a chance of rain. Highs from the low 60s to upper 70s. Lows from near 30 to mid 50s.

 

Central:  

Casper:  Sunny today with a high near 78 and wind gusts as high as 20 mph. Increasing clouds and breezy overnight with a slight chance of rain before 11 p.m., wind gusts as high as 25 mph and a low near 50.

 

Riverton:  Mostly sunny today with a high near 74 and mostly cloudy, gradually becoming mostly clear overnight with a chance of rain mainly before 9 p.m. and a low near 45.

 

Shoshoni:   Mostly sunny today with a high near 74 and partly cloudy overnight with a chance of rain mainly before 10 p.m. and a low near 49.

 

Southwest:  

Evanston  Chance of rain, mostly cloudy today with a high near 65 and mostly clear overnight with a slight chance of rain before 9 p.m. and a low near 37.

 

Green River:   Chance of rain mainly after 3 p.m., otherwise mostly sunny today with a high near 72 and wind gusts as high as 22 mph. Mostly cloudy, gradually becoming mostly clear overnight with a chance of rain before 9 p.m., a low near 41 and wind gusts as high as 20 mph.

 

Cokeville:   Chance of rain after noon, otherwise partly sunny today with a high near 65 and partly cloudy overnight with a chance of rain before 9 p.m. and a low near 29.

 

Western Wyoming:  

Pinedale:   Slight chance of rain, otherwise partly sunny today with a high near 63 and cloudy, gradually becoming partly cloudy overnight with a chance of rain and a low near 35.

 

Alpine Chance of rain mainly after 3 p.m., otherwise partly sunny today with a high near 68 and mostly cloudy overnight with a chance of rain mainly before 11 p.m. and a low near 38.

 

Big Piney:   Patchy fog before 8 a.m., slight chance of rain after 2 p.m., otherwise partly sunny today with a high near 62 and partly cloudy overnight with a chance of rain before 10 p.m. and a low near 30.

 

Northwest: 

Dubois  Chance of rain, otherwise partly sunny today with a high near 63 and mostly cloudy overnight with a chance of rain before 2 a.m. and a low near 39.

 

Jackson:   Chance of rain mainly after 5 p.m., increasing clouds today with a high near 67 and mostly cloudy overnight with rain likely mainly before 1 a.m. and a low near 36.

 

Old Faithful in Yellowstone National Park:   Patchy fog before 9 a.m., slight chance of rain after 3 p.m., increasing clouds today with a high near 63 and mostly cloudy overnight with a chance of rain and a low near 32.

 

Bighorn Basin:  

Thermopolis:   Sunny today with a high near 78 and partly cloudy overnight with a chance of rain mainly before 10 p.m. and a low near 47.

 

Cody:   Slight chance of rain after 4 p.m., otherwise mostly sunny today with a high near 76 and cloudy, gradually becoming partly cloudy overnight with a chance of rain and a low near 50.

 

Greybull:  Sunny today with a high near 79 and mostly cloudy overnight with a chance of rain and a low near 48.

 

North Central:  

Buffalo:   Sunny today with a high near 75 and partly cloudy overnight with a chance of rain before 1 a.m. and a low near 53.

 

Sheridan:   Patchy fog before 9 a.m., mostly sunny today with a high near 79 and mostly cloudy overnight with a chance of rain and a low near 47.

 

Story:   Mostly sunny today with a high near 75 and partly cloudy overnight with a chance of rain and a low near 50.

 

Northeast:  

Gillette:  Gradually clearing skies, breezy today with a high near 73 and wind gusts as high as 32 mph. Increasing clouds and breezy overnight with a slight chance of rain, a low near 51 and wind gusts as high as 31 mph.

 

Newcastle:   Gradually becoming sunny today with a high near 68 and wind gusts as high as 21 mph. Increasing clouds overnight with a slight chance of rain, a low near 55 and wind gusts as high as 23 mph.

 

Upton:  Gradually becoming sunny today with a high near 70 and wind gusts as high as 24 mph. Increasing clouds overnight with a slight chance of rain, a low near 51 and wind gusts as high as 23 mph.

 

Eastern Plains:  

Torrington:  Gradually becoming sunny today with a high near 74 and partly cloudy overnight with a low near 54.

 

Lusk:   Mostly sunny today with a high near 71 and increasing clouds and breezy overnight with a low near 49 and wind gusts as high as 30 mph.

 

Kaycee:  Sunny today with a high near 78 and wind gusts as high as 20 mph. Partly cloudy overnight with a chance of rain before 11 p.m. and a low near 48.

 

Southeast:  

Cheyenne:   Gradually becoming sunny today with a high near 75 and partly cloudy overnight with a slight chance of rain before midnight and a low near 50.

 

Laramie:  Mostly sunny today with a high near 73 and mostly cloudy overnight with a chance of rain and a low near 47.

 

Medicine Bow:  Sunny today with a high near 75 and mostly cloudy overnight with a chance of rain and a low near 44.

 

South Central:  

Rawlins:   Sunny today with a high near 73 and wind gusts as high as 25 mph. Mostly cloudy overnight with a chance of rain and a low near 46.

 

Saratoga:   Sunny today with a high near 75 mostly cloudy overnight with a chance of rain and a low near 41.

 

Hanna:   Sunny today with a high near 73 and partly cloudy overnight with a chance of rain and a low near 45.

Authors

CK

Coy Knobel

Night Editor