National Weather Service Forecast for: Casper WY
Issued by: National Weather Service Riverton, WY
Updated: 9:16 am MDT May 4, 2026
 
Today

Today: Scattered showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 61. Breezy, with a north northeast wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Scattered
Showers and
Breezy

 Tonight

Tonight: Rain showers likely before 2am, then rain and snow showers likely. Some thunder is also possible. Cloudy, with a low around 36. Breezy, with a north northeast wind 6 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Showers
Likely and
Breezy then
Rain/Snow
Likely
 Tuesday

Tuesday: Snow showers, possibly mixed with rain. Some thunder is also possible. High near 44. Northeast wind 6 to 13 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Snow Showers
Likely then
Rain/Snow

 Tuesday
Night
Tuesday Night: Snow showers likely, possibly mixed with rain, becoming all snow after 9pm. Mostly cloudy, with a low around 27. North northeast wind 6 to 13 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Rain/Snow
Likely then
Chance Snow
Showers
 Wednesday

Wednesday: A 20 percent chance of snow showers. Mostly sunny, with a high near 52. West northwest wind 6 to 11 mph.
Slight Chance
Snow Showers

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 36. West northwest wind 7 to 11 mph becoming southwest after midnight.
Mostly Clear


 Thursday

Thursday: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 69. Breezy, with a southwest wind 11 to 18 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.
Breezy.
Mostly Sunny
then Slight
Chance
T-storms
 Thursday
Night
Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 40%.
Chance
Showers

 Friday

Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 71.
Mostly Sunny
then Slight
Chance
T-storms
Hi 61 °F Lo 36 °F Hi 44 °F Lo 27 °F Hi 52 °F Lo 36 °F Hi 69 °F Lo 42 °F Hi 71 °F

Freeze Watch
Hazardous Weather Outlook
 

Today
 
 Scattered showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 61. Breezy, with a north northeast wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Tonight
 
 Rain showers likely before 2am, then rain and snow showers likely. Some thunder is also possible. Cloudy, with a low around 36. Breezy, with a north northeast wind 6 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tuesday
 
 Snow showers, possibly mixed with rain. Some thunder is also possible. High near 44. Northeast wind 6 to 13 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tuesday Night
 
 Snow showers likely, possibly mixed with rain, becoming all snow after 9pm. Mostly cloudy, with a low around 27. North northeast wind 6 to 13 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday
 
 A 20 percent chance of snow showers. Mostly sunny, with a high near 52. West northwest wind 6 to 11 mph.
Wednesday Night
 
 Mostly clear, with a low around 36. West northwest wind 7 to 11 mph becoming southwest after midnight.
Thursday
 
 A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 69. Breezy, with a southwest wind 11 to 18 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
 
 A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 40%.
Friday
 
 A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 71.
Friday Night
 
 A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 44. Chance of precipitation is 20%.
Saturday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 68.
Saturday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 41.
Sunday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 69.

 

Forecast from NOAA-NWS for Casper WY.