National Weather Service Forecast for: Casper WY
Issued by: National Weather Service Riverton, WY
Updated: 10:47 pm MST Dec 4, 2025
 
Overnight

Overnight: Isolated snow showers after 3am.  Cloudy, with a low around 27. Breezy, with a southwest wind 14 to 18 mph, with gusts as high as 26 mph.  Chance of precipitation is 20%.
Isolated Snow
Showers and
Breezy
Friday

Friday: A 30 percent chance of snow showers, mainly before 9am.  Partly sunny, with a high near 36. Southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Chance Snow
Showers then
Mostly Sunny
Friday
Night
Friday Night: A chance of rain and snow showers after 11pm.  Mostly cloudy, with a low around 30. Breezy, with a southwest wind 13 to 23 mph, with gusts as high as 36 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.
Chance
Rain/Snow and
Breezy
Saturday

Saturday: A 40 percent chance of snow showers, mainly before 11am.  Partly sunny, with a high near 42. Breezy, with a west northwest wind 7 to 15 mph, with gusts as high as 25 mph.  Little or no snow accumulation expected.
Chance Snow
Showers and
Breezy
Saturday
Night
Saturday Night: Mostly cloudy, with a low around 20. Southwest wind 5 to 13 mph.
Mostly Cloudy

Sunday

Sunday: Mostly sunny, with a high near 40. Breezy, with a southwest wind 13 to 15 mph, with gusts as high as 22 mph.
Mostly Sunny
then Mostly
Sunny and
Breezy
Sunday
Night
Sunday Night: Mostly cloudy, with a low around 27. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Mostly Cloudy
and Breezy

Monday

Monday: Mostly sunny, with a high near 44. Breezy.
Mostly Sunny
and Breezy

Monday
Night
Monday Night: Partly cloudy, with a low around 29. Breezy.
Partly Cloudy
and Breezy

Lo 27 °F Hi 36 °F Lo 30 °F Hi 42 °F Lo 20 °F Hi 40 °F Lo 27 °F Hi 44 °F Lo 29 °F

Hazardous Weather Outlook
 

Overnight
 
Isolated snow showers after 3am. Cloudy, with a low around 27. Breezy, with a southwest wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Friday
 
A 30 percent chance of snow showers, mainly before 9am. Partly sunny, with a high near 36. Southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Friday Night
 
A chance of rain and snow showers after 11pm. Mostly cloudy, with a low around 30. Breezy, with a southwest wind 13 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday
 
A 40 percent chance of snow showers, mainly before 11am. Partly sunny, with a high near 42. Breezy, with a west northwest wind 7 to 15 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.
Saturday Night
 
Mostly cloudy, with a low around 20. Southwest wind 5 to 13 mph.
Sunday
 
Mostly sunny, with a high near 40. Breezy, with a southwest wind 13 to 15 mph, with gusts as high as 22 mph.
Sunday Night
 
Mostly cloudy, with a low around 27. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
 
Mostly sunny, with a high near 44. Breezy.
Monday Night
 
Partly cloudy, with a low around 29. Breezy.
Tuesday
 
Mostly cloudy, with a high near 49. Windy.
Tuesday Night
 
A chance of rain and snow showers. Mostly cloudy, with a low around 30. Breezy.
Wednesday
 
A chance of rain and snow showers. Mostly cloudy, with a high near 43. Breezy.
Wednesday Night
 
A chance of rain and snow showers. Mostly cloudy, with a low around 24. Breezy.
Thursday
 
A slight chance of rain and snow showers. Mostly sunny, with a high near 43. Breezy.

 

Forecast from NOAA-NWS for Casper WY.