Don Day Wyoming Weather Forecast: Monday, August 21, 2023

Chance for rain in some parts of western Wyoming, otherwise sunny, hot and breezy the rest of the state with highs in the 80s and 90s with some low 100s in eastern and central Wyoming. Fire danger in parts of Campbell, Weston, Fremont, Natrona and Sweetwater counties. 

August 21, 20238 min read

Sunrise at Sinclair Refinery in Sinclair, Wyoming on August 19, 2023.
Sunrise at Sinclair Refinery in Sinclair, Wyoming on August 19, 2023. (Submitted by Joe Heinly)
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Chance for rain in some parts of western Wyoming on Monday, otherwise it should be sunny, hot and breezy in much of the rest of the state with highs in the 80s and 90s with some low 100s in eastern and central Wyoming. Fire danger in parts of Campbell, Weston, Fremont, Natrona and Sweetwater counties. 

Central:   

Casper:  Look for it to be hazy before 8 a.m. then sunny and windy with a high near 93 today and mostly clear and breezy overnight with the low around 64.  Winds could gust to 37 mph during the day and 23 mph overnight.  

Riverton:   Expect it to be sunny and breezy today with a high near 94 and mostly clear and breezy overnight with the low near 59. Winds could gust to 34 mph during the day and 33 mph overnight. There’s a red flag warning (conditions present that make for fire danger) in effect from noon today until 8 p.m. tonight.      

Jeffrey CityIt should be sunny and breezy today with a high near 88 and mostly clear and breezy overnight with the low near 58. Winds could gust to 33 mph during the day and 30 mph overnight. There’s a red flag warning (conditions present that make for fire danger) in effect from noon today until 8 p.m. tonight.       

Southwest:   

Evanston There’s a chance of showers after noon and overnight. Otherwise, expect it to be mostly sunny and breezy today with a high near 80 and mostly cloudy overnight with a low near 52. Winds could gust to 41 mph during the day and 21 mph overnight.   

Rock Springs:  It should be sunny and breezy today with a high near 86 and mostly clear and breezy overnight with the low around 56.  Winds could gust to 37 mph during the day and 31 mph overnight. 

Lyman There’s a slight chance of showers after noon today and a chance mainly before midnight tonight. Otherwise, it should be mostly sunny today with a high near 85 and partly cloudy overnight with the low near 53. Winds could gust to 37 mph during the day.     

Western Wyoming:   

Pinedale:  There’s a slight chance of showers after 11 a.m. today and before 11 p.m. tonight.  Otherwise, it should be mostly sunny and breezy today with a high near 80 and partly cloudy and breezy overnight with the low around 51. Winds could gust to 34 mph during the day and 28 mph overnight. 

Alpine:   There’s a chance of rain today and mainly before 8 p.m. tonight.  Otherwise, look for it to be mostly sunny today with a high near 82 and mostly cloudy overnight with the low around 55. Winds could gust to 26 mph during the day and 21 mph overnight. 

Big Piney:  There’s a chance of showers mainly between 2 p.m. and 3 p.m. today and a slight chance before 8 p.m. tonight.  Otherwise, expect it to be sunny and windy today with a high near 83 and partly cloudy and breezy overnight with a low near 48. Winds could gust to 38 mph during the day and 26 mph overnight. 

Northwest:   

Dubois:  There’s a slight chance of rain after 11 a.m. today and before 9 p.m. tonight, otherwise look for it to be sunny today with a high near 80 and partly cloudy overnight with the low around 53. Winds could gust to 21 mph during the day. 

Jackson:  There’s a chance of rain today and mainly before 10 p.m. tonight.  Otherwise, it should be mostly sunny and breezy today with a high near 81 and partly cloudy and breezy overnight with the low around 51. Winds could gust to 31 mph during the day and 28 mph overnight.  

Old Faithful in Yellowstone National Park:  Rain is possible today and mainly before 9 p.m. tonight.  Otherwise, expect it to be partly sunny and breezy today with a high near 72 and partly cloudy and breezy overnight with a low near 47. Winds could gust to 26 mph during the day and 24 mph overnight.   

Bighorn Basin:   

Thermopolis Expect it to be hazy before noon then sunny and breezy today with a high near 96 and mostly clear and breezy overnight with a low near 63. Winds could gust to 33 mph during the day and overnight.     

Cody: There’s a slight chance of showers between 2 p.m. and 3 p.m. today.  Otherwise, look for it to be hazy before noon, then breezy and gradually becoming sunny today with a high near 90 and mostly clear and windy tonight with the low around 63. Winds could gust to 26 mph during the day and 38 mph overnight.    

Ten Sleep:  It should be hazy before 10 a.m. today then sunny and breezy with a high near 95 and mostly clear and breezy overnight with a low near 65. Winds could gust to 31 mph during the day and 28 mph overnight.     

North Central:   

Buffalo:  Look for widespread haze before 1 p.m.  Expect it to be mostly cloudy through mid-morning then gradually clearing and breezy today with a high near 93 and mostly clear and breezy overnight with a low around 66. Winds could gust to 26 mph during the day and 24 mph overnight.     

Sheridan:  Expect patchy fog before 9 a.m. then it should gradually become sunny and hot today with a high near 95 and mostly clear overnight with the low near 61.  

Dayton:  Look for patchy fog before 9 a.m. then it should gradually clear and be hot today with a high near 91 and be mostly clear overnight with the low near 62. 

Northeast:   

GilletteExpect it to be sunny today with a high near 96 and mostly clear overnight with the low near 62. Winds could gust to 26 mph during the day and overnight.  There’s a fire weather watch in effect from noon today until 7 p.m. tonight.  

Newcastle:  It should gradually become sunny today with a high near 97 and be mostly clear overnight and a low near 61. Winds could gust to 20 mph during the day and 16 mph overnight. There’s a fire weather watch in effect from noon today until 7 p.m. tonight.     

Moorcroft:  Look for it to be sunny today with a high near 99 and mostly clear overnight with a low near 60. Winds could gust as high as 21 mph during the day and overnight. 

Eastern Plains:   

Torrington:  Expect it to be sunny and hot today with a high near 101 and clear overnight with the low near 60.  

Douglas:  Look for it to be sunny, hot and breezy today with a high near 101 and mostly clear overnight with the low near 60.  Winds could gust to 35 mph during the day. 

Wheatland:  It should be sunny and hot today with a high near 99 and mostly clear overnight with a low near 65.  

Southeast:   

Cheyenne:  Look for it to be sunny and hot today with a high near 92 and mostly clear overnight with a low near 61. 

Laramie:  It should be sunny today with a high near 88 and mostly clear overnight with a low near 57.  

Chugwater:  Expect it to be sunny and hot today with a high near 94 and mostly clear overnight with a low near 64.  

South Central:   

Rawlins:  Look for it to be sunny and windy today with a high near 88 and mostly clear and breezy overnight with a low near 58. Winds could gust to 40 mph during the day and 35 mph overnight.   

Encampment:  Expect it to be sunny and breezy today with a high near 86 and partly cloudy overnight with a low near 57. Winds could gust as high as 30 mph during the day.    

Hanna:  It should be sunny and breezy today with a high near 87 and partly cloudy overnight with a low near 57.  Winds could gust as high as 35 mph during the day.