Don Day's Wyoming Weather Forecast: Monday, September 29, 2025

Mostly sunny in much of Wyoming on Monday with a chance for afternoon rain in some areas. Highs from the mid 60s to the mid 80s and lows from the upper 30s to the upper 50s.

CK
Coy Knobel

September 29, 20254 min read

Dubois
Turning fall foliage captured last evening at Pete’s Pond in Dubois.
Turning fall foliage captured last evening at Pete’s Pond in Dubois. (Reader photo: Lynn Stewart)

Mostly sunny in much of Wyoming on Monday with a chance for afternoon rain in some areas. Highs from the mid 60s to the mid 80s and lows from the upper 30s to the upper 50s.

Central:  

Casper:  Mostly sunny today with a high near 76 and wind gusts as high as 22 mph. Mostly clear overnight with a low near 55.

Riverton:  Sunny today with a high near 80 and mostly clear overnight with a low near 48.

Shoshoni:  Sunny today with a high near 81 and mostly clear overnight with a low near 50.

Southwest:  

Evanston Slight chance of rain after noon, otherwise mostly sunny today with a high near 68 and mostly cloudy overnight with a low near 44.

Green River:  Sunny today with a high near 72 and partly cloudy overnight with a low near 47.

Lyman:  Mostly sunny today with a high near 70 and mostly cloudy overnight with a low near 46.

Western Wyoming:  

Pinedale:  Slight chance of rain after noon, otherwise mostly sunny today with a high near 67 and partly cloudy overnight with a low near 42.

Alpine:  Slight chance of rain after noon, otherwise mostly sunny today with a high near 73 and mostly cloudy overnight with a chance of rain mainly after 4 a.m. and a low near 43 

Big Piney:  Mostly sunny today with a high near 68 and partly cloudy overnight with a low near 38.

Northwest: 

Dubois Chance of rain mainly after 1 p.m., otherwise mostly sunny today with a high near 66 and partly cloudy overnight with a slight chance of rain before 7 p.m. and a low near 42 

Jackson:  Chance of rain mainly after 4 p.m., otherwise mostly sunny today with a high near 71 and mostly cloudy overnight with a chance of rain and a low near 38.

Old Faithful in Yellowstone National Park:  Chance of rain mainly after 1 p.m., otherwise mostly sunny today with a high near 65 and mostly cloudy overnight with a slight chance of rain and a low near 36.

­­Bighorn Basin:  

Thermopolis Sunny today with a high near 81 and mostly clear overnight with a low near 50.

Cody:  Slight chance of rain after 2 p.m., increasing clouds today with a high near 79 and partly cloudy overnight with a slight chance of rain before 7 p.m. and a low near 56.

Ten Sleep:  Sunny today with a high near 80 and mostly clear overnight with a low near 59.

North Central:  

Buffalo:  Mostly sunny today with a high near 80 and mostly clear overnight with a low near 58.

Sheridan:  Mostly sunny today with a high near 85 and mostly clear overnight with a low near 48.

Ranchester:  Mostly sunny today with a high near 83 and mostly clear overnight with a low near 50.

Northeast:  

Gillette:  Mostly sunny today with a high near 83 and wind gusts as high as 17 mph. Mostly clear overnight with a low near 55 and wind gusts as high as 21 mph. 

Newcastle:  Mostly sunny today with a high near 82 and mostly clear overnight with a low near 54.

Hulett:  Mostly sunny today with a high near 85 and mostly clear overnight with a low near 57.

Eastern Plains:  

Torrington:  Mostly sunny today with a high near 83 and partly cloudy overnight with a low near 50.

Wheatland:  Mostly sunny today with a high near 81 and partly cloudy overnight with a low near 54.

Midwest:  Mostly sunny today with a high near 79 and wind gusts as high as 21 mph. Mostly clear overnight with a low near 51.

Southeast:  

Cheyenne:  Slight chance of rain after 2 p.m., otherwise mostly sunny today with a high near 74 and mostly clear overnight with a slight chance of rain before 9 p.m. and a low near 48. 

Laramie:  Chance of rain mainly after 2 p.m., otherwise mostly sunny today with a high near 68 and mostly clear overnight with a slight chance of rain before 9 p.m. and a low near 43.

Chugwater:  Slight chance of rain after 3 p.m., otherwise mostly sunny today with a high near 77 and partly cloudy overnight with a slight chance of rain before 9 p.m. and a low near 50. 

South Central:  

Rawlins:  Mostly sunny today with a high near 68 and mostly clear overnight with a low near 47.

Encampment:  Chance of rain mainly after 4 p.m., otherwise mostly sunny today with a high near 67 and mostly clear overnight with a slight chance of rain before 9 p.m. and a low near 42.

Wamsutter:  Mostly sunny today with a high near 70 and wind gusts as high as 21 mph. Mostly clear overnight with a low near 43. 

Authors

CK

Coy Knobel

Night Editor