Don Day's Wyoming Weather Forecast: Wednesday, September 30, 2026

Mostly sunny in much of Wyoming on Wednesday, clouds in the southeast. Mix of cloudy and clear skies overnight. Highs in the 60s and 70s. Lows in the 30s and 40s.

CK
Coy Knobel

September 30, 20264 min read

"Wood River on the way to Kirwin, Wyoming."
"Wood River on the way to Kirwin, Wyoming." (Reader photo: Joe Lyons)

Mostly sunny in much of Wyoming on Wednesday, clouds in the southeast. Mix of cloudy and clear skies overnight. Highs in the 60s and 70s. Lows in the 30s and 40s.

 

Central:  

Casper:  Sunny today with a high near 72 and partly cloudy overnight with a low near 42.

 

Riverton:  Sunny today with a high near 75 and mostly clear overnight with a low near 44.

 

Glenrock:   Mostly sunny today with a high near 73 and partly cloudy overnight with a low near 42.

 

Southwest:  

Evanston:   Sunny today with a high near 68 and mostly clear overnight with a low near 38.

 

Green River:   Sunny today with a high near 72 and mostly clear overnight with a low near 40.

 

Cokeville:   Sunny today with a high near 72 and mostly clear overnight with a low near 31.

 

Western Wyoming:  

Pinedale:   Sunny today with a high near 70 and mostly clear overnight with a low near 37.

 

Alpine:  Sunny today with a high near 70 and mostly clear overnight with a low near 37.

 

Big Piney:   Sunny today with a high near 70 and mostly clear overnight with a low near 33 and wind gusts as high as 20 mph.

 

Northwest: 

Dubois:   Sunny today with a high near 68 and mostly clear overnight with a low near 38.

 

Jackson:   Sunny today with a high near 71 and mostly clear overnight with a low near 34.

 

Old Faithful in Yellowstone National Park:   Sunny today with a high near 62 and mostly clear overnight with a low near 31.

 

Bighorn Basin:  

Thermopolis:   Sunny today with a high near 75 and increasing clouds overnight with a low near 46.

 

Cody:   Sunny today with a high near 72 and mostly clear overnight with a low near 42.

 

Lovell:  Sunny today with a high near 75 and mostly clear and breezy overnight with a low near 43 and wind gusts as high as 32 mph.

 

North Central:  

Buffalo:   Sunny today with a high near 69 and partly cloudy overnight with a low near 47 and wind gusts as high as 21 mph.

 

Sheridan:   Sunny today with a high near 77 and mostly cloudy overnight with a low near 41.

 

Dayton:   Sunny today with a high near 75 and mostly cloudy overnight with a low near 42.

 

Northeast:  

Gillette:  Sunny today with a high near 74 and wind gusts as high as 22 mph. Increasing clouds overnight with a low near 45 and wind gusts as high as 23 mph.

 

Newcastle:   Sunny today with a high near 75 and mostly cloudy overnight with a low near 49 and wind gusts as high as 16 mph.

 

Hulett:  Sunny today with a high near 77 and wind gusts as high as 16 mph. Increasing clouds overnight with a low near 44 and wind gusts as high as 16 mph.

 

Eastern Plains:  

Torrington:  Areas of fog before noon, partly sunny today with a high near 76 and mostly cloudy overnight with a low near 48.

 

Douglas:   Mostly sunny today with a high near 74 and mostly cloudy overnight with a low near 43.

 

Kaycee:  Sunny today with a high near 73 and partly cloudy and breezy overnight with a low near 44 and wind gusts as high as 28 mph.

 

Southeast:  

Cheyenne:   Areas of fog before noon, slight chance of rain after 3 p.m., mostly cloudy today with a high near 65 and cloudy overnight with a low near 46.

 

Laramie:  Areas of fog before noon, mostly cloudy today with a high near 63 and mostly cloudy overnight with a low near 40.

 

Chugwater:  Areas of fog before noon, partly sunny today with a high near 69 and mostly cloudy overnight with a low near 47.

 

South Central:  

Rawlins:   Partly sunny today with a high near 69 and partly cloudy overnight with a low near 40.

 

Saratoga:   Partly sunny today with a high near 69 and gradually becoming mostly clear overnight with a low near 35.

 

Wamsutter:   Mostly sunny today with a high near 68 and mostly clear overnight with a low near 40.

Authors

CK

Coy Knobel

Night Editor