Don Day's Wyoming Weather Forecast: Tuesday, September 15, 2026

Mostly sunny in Wyoming on Tuesday. Breezy, chance of rain in some areas. Partly cloudy and a chance of rain, breezy in some locations overnight. Highs in the 60s and 70s. Lows from the mid-30s to mid-50s.

CK
Coy Knobel

September 15, 20265 min read

Sublette County
Sunset photo in the Gypsum Creek Basin, north of Cora.
Sunset photo in the Gypsum Creek Basin, north of Cora. (Reader photo: Charles Barnum)

Mostly sunny in Wyoming on Tuesday. Breezy, chance of rain in some areas. Partly cloudy and a chance of rain, breezy in some locations overnight. Highs in the 60s and 70s. Lows from the mid-30s to mid-50s.

 

Central:  

CasperSunny today with a high near 77 and partly cloudy overnight with a slight chance of rain before midnight, a low near 51 and wind gusts as high as 20 mph.

Lander:  Sunny today with a high near 76 and partly cloudy overnight with a low near 48.

Glenrock:   Sunny today with a high near 72 and partly cloudy overnight with a slight chance of rain before 9 p.m., a low near 53 and wind gusts as high as 25 mph.

 

Southwest:  

Evanston:   Mostly sunny today with a high near 74 and wind gusts as high as 32 mph. Mostly cloudy overnight with a chance of rain and a low near 45.

Rock Springs:   Increasing clouds today with a high near 77 and wind gusts as high as 20 mph. Mostly cloudy overnight with a chance of rain and a low near 47.

Lyman:   Mostly sunny today with a high near 76 and partly cloudy overnight with a chance of rain and a low near 46.

 

Western Wyoming:  

Pinedale:   Increasing clouds today with a high near 70 and wind gusts as high as 20 mph. Partly cloudy overnight with a slight chance of rain after midnight, a low near 37 and wind gusts as high as 20 mph.

Afton:  Freeze warning until 9 a.m. Increasing clouds today with a high near 74 and wind gusts as high as 21 mph. Gradually becoming mostly clear overnight with a slight chance of rain after midnight and a low near 40.

La Barge:   Mostly sunny and breezy today with a high near 73 and wind gusts as high as 23 mph. Partly cloudy and breezy overnight with a slight chance of rain after midnight, a low near 35 and wind gusts as high as 22 mph.

 

Northwest: 

Dubois:   Mostly sunny today with a high near 67 and wind gusts as high as 21 mph. Gradually clearing overnight with a low near 40.

Jackson:   Increasing clouds today with a high near 74 and wind gusts as high as 22 mph. Gradually clearing overnight with a low near 35.

Old Faithful in Yellowstone National Park:   Sunny today with a high near 63 and wind gusts as high as 21 mph. Partly cloudy overnight with a low near 31.

 

Bighorn Basin:  

Thermopolis:   Increasing clouds today with a high near 78 and partly cloudy overnight with a low near 46.

Cody:   Sunny today with a high near 71 and wind gusts as high as 23 mph. Partly cloudy overnight with a low near 47.

Lovell:  Sunny today with a high near 75 and wind gusts as high as 21 mph. Partly cloudy overnight with a low near 42.

 

North Central:  

Buffalo:   Sunny and breezy today with a high near 72 and wind gusts as high as 36 mph. Partly cloudy and breezy overnight with a low near 53 and wind gusts as high as 23 mph.

Sheridan:   Sunny today with a high near 72 and partly cloudy overnight with a low near 43.

Dayton:   Increasing clouds today with a high near 68 and partly cloudy overnight with a low near 47.

 

Northeast:  

Gillette:  Increasing clouds today with a high near 71 and wind gusts as high as 26 mph. Partly cloudy and breezy overnight with a low near 52 and wind gusts as high as 43 mph.

Newcastle:   Increasing clouds today with a high near 72 and wind gusts as high as 23 mph. Partly cloudy and breezy overnight with a slight chance of rain, a low near 52 and wind gusts as high as 34 mph.

Sundance:  Sunny today with a high near 69 and wind gusts as high as 16 mph. Partly cloudy overnight with a low near 52 and wind gusts as high as 32 mph.

 

Eastern Plains:  

Torrington:  Sunny and breezy today with a high near 73 and wind gusts as high as 30 mph. Partly cloudy and breezy overnight with a slight chance of rain after 9 p.m., a low near 55 and wind gusts as high as 30 mph.

Douglas:   Sunny and breezy today with a high near 71 and wind gusts as high as 40 mph. Partly cloudy and breezy overnight with a low near 52 and wind gusts as high as 40 mph.

Guernsey:  Sunny and breezy today with a high near 74 and wind gusts as high as 35 mph. Partly cloudy and breezy overnight with a slight chance of rain before midnight, a low near 56 and wind gusts as high as 35 mph.

 

Southeast:  

Cheyenne:   Slight chance of rain after 3 p.m., otherwise mostly sunny and breezy today with a high near 67 and wind gusts as high as 30 mph. Mostly cloudy and breezy overnight with a chance of rain mainly before midnight, a low near 50 and wind gusts as high as 30 mph.

Laramie:  Chance of rain after 3 p.m., otherwise sunny and breezy today with a high near 67 and wind gusts as high as 30 mph. Partly cloudy and breezy overnight with a chance of rain mainly before midnight, a low near 50 and wind gusts as high as 30 mph.

Chugwater:  Sunny and breezy today with a high near 71 and wind gusts as high as 35 mph. Partly cloudy and breezy overnight with a chance of rain mainly before midnight, a low near 55 and wind gusts as high as 35 mph.

 

South Central:  

Rawlins:   Slight chance of rain after 3 p.m., otherwise sunny and breezy today with a high near 72 and wind gusts as high as 30 mph. Mostly cloudy overnight with a chance of rain, a low near 51 and wind gusts as high as 25 mph.

Encampment:   Chance of rain after noon, otherwise mostly sunny today with a high near 72 and mostly cloudy overnight with a chance of rain and a low near 51.

Wamsutter:   Sunny and breezy today with a high near 74 and wind gusts as high as 24 mph. Partly cloudy overnight with a chance of rain, a low near 45 and wind gusts as high as 22 mph.

Authors

CK

Coy Knobel

Night Editor