Casper (WY)
December
Weather in Casper, Wyoming for December 2025
Your guide to Casper weather in December - trends and predictions
With an average of 4 snowy days, Casper usually enjoys a light touch of snow in December.
In general, the average temperature in Casper at the beginning of December is 7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 3.4 °F by the end of December.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
More
26
Dry days
1
Rainy days
4
Snow days
5°/-3°
Temperatures
27 km/h
Avg max wind
68 %
Avg humidity
Casper Weather December
Move between months or click on a day
Temperatures trend during December in Casper
See the weather trend as well as the moving average line
December weather in Casper day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 5° /-5° | 0 mm | 0 cm | |
| Dec. 2 | Sunny | 8° /-5° | 0 mm | 0 cm | |
| Dec. 3 | Sunny | 9° /-3° | 0 mm | 0 cm | |
| Dec. 4 |  Partly cloudy | 7° /-4° | 0 mm | 0 cm | |
| Dec. 5 | Partly cloudy | 7° /-4° | 0 mm | 0 cm | |
| Dec. 6 | Partly cloudy | 6° /-4° | 0 mm | 0 cm | |
| Dec. 7 | Partly cloudy | 7° /-3° | 0 mm | 0 cm | |
| Dec. 8 |  Overcast | 6° /-3° | 1.2 mm | 0.6 cm | |
| Dec. 9 |  Patchy moderate snow | -1° /-4° | 1.7 mm | 0.5 cm | |
| Dec. 10 | Sunny | 0° /-6° | 0 mm | 0 cm | |
| Dec. 11 |  Cloudy | 3° /-4° | 0 mm | 0 cm | |
| Dec. 12 | Overcast | 4° /-3° | 0 mm | 0 cm | |
| Dec. 13 | Overcast | 4° /-5° | 0 mm | 0 cm | |
| Dec. 14 | Partly cloudy | 5° /-2° | 0 mm | 0 cm | |
| Dec. 15 | Overcast | 4° /-2° | 1.5 mm | 1.1 cm | |
| Dec. 16 | Sunny | 3° /-6° | 0 mm | 0 cm | |
| Dec. 17 |  Patchy rain possible | 2° /-4° | 0.2 mm | 0 cm | |
| Dec. 18 | Overcast | 5° /-5° | 0 mm | 0 cm | |
| Dec. 19 | Overcast | 5° /-4° | 0 mm | 0 cm | |
| Dec. 20 | Partly cloudy | 7° /-4° | 0 mm | 0 cm | |
| Dec. 21 | Sunny | 10° /-2° | 0 mm | 0 cm | |
| Dec. 22 | Overcast | 7° /0° | 0 mm | 0 cm | |
| Dec. 23 | Overcast | 7° /-2° | 0 mm | 0 cm | |
| Dec. 24 | Overcast | 7° /-2° | 0 mm | 0 cm | |
| Dec. 25 | Overcast | 6° /-1° | 0 mm | 0 cm | |
| Dec. 26 | Patchy rain possible | 4° /-1° | 0.8 mm | 0 cm | |
| Dec. 27 | Overcast | 2° /-2° | 0 mm | 0 cm | |
| Dec. 28 | Overcast | 4° /-2° | 0 mm | 0 cm | |
| Dec. 29 | Partly cloudy | 7° /-2° | 0 mm | 0 cm | |
| Dec. 30 |  Moderate or heavy snow showers | 2° /-4° | 10.8 mm | 3.8 cm | |
| Dec. 31 |  Thundery outbreaks possible | -1° /-6° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for Casper in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Casper forecast closer to your planned date for the most up-to-date weather information.
Change Month
Casper in December - FAQ
What are the expected maximum and minimum temperatures in Casper during December?
Brace for cold days with temperatures not exceeding 5° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Casper during December?
Expect minimal rainfall in Casper during December, with a total of 16.2 mm over approximately 1 days. This minimal precipitation is unlikely to significantly impact plans.
Will it snow in Casper in December 2025?
Casper experiences an average snowfall of 5.9 cm during December, occurring over 4 days.
What are the typical wind conditions in Casper during December?
The average wind speed in Casper during December is 27 km/h, suggesting breezy to windy conditions, depending on your activities.
Casper snow forecast December 2025
Track daily snowfall levels and discover Casper’s snowy potential this December ❄️
December rainfall patterns in Casper
Explore the daily rainfall trends and prepare for Caspers December weather 💧
Quick links
More Casper weather pages
You are here
Where is Casper?Get accurate weather forecasts for Casper, located at latitude 42.867 and longitude -106.313. Stay updated with localized weather information tailored for Casper.
Found a mistake?
We appreciate your attention to details. Tell us here.