Don Day's Wyoming Weather Forecast: Wednesday, September 17, 2025

Chance of rain in Wyoming on Wednesday, otherwise a mix of mostly cloudy to sunny skies. Highs from the mid 50s to near 70 and lows from the low 30s to the low 50s.

CK
Coy Knobel

September 17, 20255 min read

Sunset from the deck of our cabin at Little Medicine, WY (about 35 miles south of Glenrock, WY)
Sunset from the deck of our cabin at Little Medicine, WY (about 35 miles south of Glenrock, WY) (Reader photo: Ron Wright)

Chance of rain in Wyoming on Wednesday, otherwise a mix of mostly cloudy to sunny skies. Highs from the mid 50s to near 70 and lows from the low 30s to the low 50s.

Central:  

Casper:  Rain likely, mostly cloudy today with a high near 60 and mostly cloudy overnight with a chance of rain and a low near 47.

Riverton:  Chance of rain, otherwise partly sunny today with a high near 67 and gradually becoming mostly clear overnight with a low near 44.

Shoshoni:  Chance of rain, otherwise partly sunny today with a high near 67 and gradually becoming mostly clear overnight with a low near 45.

Southwest:  

Evanston Slight chance of rain after 3 p.m., otherwise sunny today with a high near 66 and mostly clear overnight with a low near 36. 

Green River:  Slight chance of rain after 2 p.m., otherwise mostly sunny today with a high near 66 and mostly clear overnight with a low near 41.

Lyman:  Slight chance of rain after 3 p.m., otherwise sunny today with a high near 67 and mostly clear overnight with a low near 39.

Western Wyoming:  

Pinedale:  Slight chance of rain, otherwise mostly sunny today with a high near 61 and partly cloudy overnight with a low near 32.

Alpine:  Slight chance of rain after noon, otherwise sunny today with a high near 70 and mostly clear overnight with a low near 38.

Big Piney:  Slight chance of rain after noon, otherwise mostly sunny today with a high near 64 and mostly clear overnight with a low near 31.

Northwest: 

Dubois Chance of rain mainly after 2 p.m., otherwise mostly sunny today with a high near 59 and wind gusts as high as 20 mph. Mostly clear overnight with a low near 36. 

Jackson:  Slight chance of rain after 2 p.m., otherwise sunny today with a high near 68 and mostly clear overnight with a low near 34. 

Old Faithful in Yellowstone National Park:  Mostly sunny today with a high near 63 and mostly clear overnight with a low near 29.

­­Bighorn Basin:  

Thermopolis Chance of rain, mostly cloudy today with a high near 69 and partly cloudy overnight with a low near 46.

Cody:  Slight chance of rain, otherwise partly sunny today with a high near 66 and mostly clear overnight with a low near 46.

Worland:  Chance of rain, otherwise gradually becoming mostly sunny today with a high near 70 and mostly clear overnight with a low near 43.

North Central:  

Buffalo:  Chance of rain, mostly cloudy and breezy today with a high near 63 and wind gusts as high as 25 mph. Gradually becoming mostly clear overnight with a chance of rain before midnight, a low near 47 and wind gusts as high as 20 mph.

Sheridan:  Chance of rain, mostly cloudy today with a high near 67 and partly cloudy overnight with a slight chance of rain before midnight and a low near 41.

Story:  Chance of rain, mostly cloudy today with a high near 62 and partly cloudy overnight with a slight chance of rain before midnight and a low near 43.

Northeast:  

Gillette:  Rain likely, cloudy today with a high near 62 and wind gusts as high as 25 mph. Mostly cloudy overnight with a chance of rain before midnight, a low near 47 and wind gusts as high as 25 mph.

Newcastle:  Rain likely today with a high near 63 and wind gusts as high as 20 mph. Mostly cloudy overnight with rain likely, a low near 49 and wind gusts as high as 20 mph 

Hulett:  Rain likely today with a high near 63 and mostly cloudy overnight with a chance of rain and a low near 47.

Eastern Plains:  

Torrington:  Chance of rain, otherwise partly sunny today with a high near 65 and mostly cloudy overnight with a chance of rain and a low near 51.

Wheatland:  Chance of rain, otherwise partly sunny today with a high near 62 and mostly cloudy overnight with a chance of rain and a low near 51.

Midwest:  Rain likely, mostly cloudy today with a high near 62 and wind gusts as high as 21 mph. Mostly cloudy overnight with a chance of rain and a low near 46.

Southeast:  

Cheyenne:  Chance of rain, otherwise partly sunny and breezy today with a high near 61 and wind gusts as high as 30 mph. Mostly cloudy overnight with a chance of rain, a low near 45 and wind gusts as high as 25 mph.

Laramie:  Chance of rain, mostly cloudy today with a high near 56 and mostly cloudy overnight with a chance of rain and a low near 40.

Chugwater:  Chance of rain, otherwise partly sunny today with a high near 60 and wind gusts as high as 25 mph. Mostly cloudy overnight with a chance of rain and a low near 47.

South Central:  

Rawlins:  Chance of rain, otherwise partly sunny today with a high near 59 and mostly cloudy overnight with a chance of rain mainly before midnight and a low near 42.

Encampment:  Chance of rain, otherwise partly sunny today with a high near 58 and mostly cloudy overnight with a chance of rain and a low near 39.

Wamsutter:  Chance of rain, otherwise partly sunny today with a high near 60 and partly cloudy overnight with a slight chance of rain before midnight and a low near 39.

Authors

CK

Coy Knobel

Night Editor