Winter temperatures · Wyoming
How cold does Casper get in winter?
In a typical winter, December to February, Casper averages highs around 36°F and lows around 15°F.
About 41 days a year never get above freezing. About 36 nights a year drop to 10°F or colder, and about 15 go below zero. That makes it the 19th coldest winter of the 129 US cities we track.
Last updated
The coldest low in the forecast for the next 48 hours is about 38°F.
Casper averages winter lows around 15°F, and the wind adds its own opinion on top, unprompted.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
More about the weather here
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Winter at a glance
| Average winter high | 36°F |
|---|---|
| Average winter low | 15°F |
| Days a year that stay below freezing | 41 |
| Nights a year at 32°F or colder | 183 |
| Nights a year at 10°F or colder | 36 |
| Nights a year below zero | 15 |
| Average summer high, for comparison | 85°F |
Winter here is December to February. Counts are averages a year.
Cities with about the same winter
- Des Moines, Iowa: highs around 34°F, lows around 17°F
- Rapid City, South Dakota: highs around 37°F, lows around 14°F
- Great Falls, Montana: highs around 36°F, lows around 16°F
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00024089.