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Weather in Casper, Wyoming for December 2025

Your guide to Casper weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 4 snowy days, Casper usually enjoys a light touch of snow in December.
    According to Casper snow forecast for December 2025, 4 snowy days are expected until the end of the month. The closest date with snow is Wednesday, December 17.

    • Temperatures

  • Until now, December 2025 in Casper is slightly cooler than the historical average by -1.7 °F.

  • The forecast for the upcoming days in Casper predicts a temperature of 7.8 °F, which is slightly above the historical average.

  • In general, the average temperature in Casper at the beginning of December is 4 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 5.9 °F by the end of December.

    • More

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Average dry days
26
Dry days
Average rainy days
1
Rainy days
Average snowy days
4
Snow days
Average temperatures
5°/-3°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
68 %
Avg humidity

Casper Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
3°
2
Sunny
4°
3
Sunny
3°
4
Partly cloudy
4°
5
Partly cloudy
4°
6
Partly cloudy
5°
7
Partly cloudy
5°
8
Overcast
6°
9
Patchy moderate snow
1°
10
Sunny
4°
11
Cloudy
5°
12
Overcast
3°
13
Overcast
4°
14
Partly cloudy
9°
15
Sunny
12°
16
Partly cloudy
9°
17
Partly cloudy
9°
18
Sunny
2°
19
Sunny
11°
20
Heavy snow
-3°
21
Sunny
5°
22
Sunny
11°
23
Partly cloudy
9°
24
Partly cloudy
11°
25
Patchy rain possible
11°
26
Sunny
7°
27
Partly cloudy
8°
28
Sunny
7°
29
Partly cloudy
7°
30
Moderate or heavy snow showers
2°
31
Thundery outbreaks possible
-1°

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
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Sunny
Sunny
 3° /-8° 0 mm 0 cm
Dec. 2 Sunny
Sunny
 4° /-5° 7.2 mm 5.2 cm
Dec. 3 Sunny
Sunny
 3° /-6° 0 mm 0 cm
Dec. 4 Partly cloudy
Partly cloudy
 4° /-7° 0 mm 0 cm
Dec. 5 Partly cloudy
Partly cloudy
 4° /-5° 9.8 mm 7 cm
Dec. 6 Partly cloudy
Partly cloudy
 5° /-4° 0 mm 0 cm
Dec. 7 Partly cloudy
Partly cloudy
 5° /-4° 0 mm 0 cm
Dec. 8 Overcast
Overcast
 6° /-3° 0.6 mm 0.3 cm
Dec. 9 Patchy moderate snow
Patchy moderate snow
 1° /-3° 0.9 mm 0.3 cm
Dec. 10 Sunny
Sunny
 4° /-4° 0 mm 0 cm
Dec. 11 Cloudy
Cloudy
 5° /-2° 0 mm 0 cm
Dec. 12 Overcast
Overcast
 3° /-2° 0 mm 0 cm
Dec. 13 Overcast
Overcast
 4° /-3° 0 mm 0 cm
Dec. 14 Partly cloudy
Partly cloudy
 9° /-2° 0 mm 0 cm
Dec. 15 Sunny
Sunny
 12° /-1° 0 mm 0 cm
Dec. 16 Partly cloudy
Partly cloudy
 9° /-1° 0 mm 0 cm
Dec. 17 Partly cloudy
Partly cloudy
 9° /-3° 0 mm 0 cm
Dec. 18 Sunny
Sunny
 2° /-6° 0 mm 0 cm
Dec. 19 Sunny
Sunny
 11° /1° 0 mm 0 cm
Dec. 20 Heavy snow
Heavy snow
 -3° /-8° 1.6 mm 1.2 cm
Dec. 21 Sunny
Sunny
 5° /-8° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 11° /2° 0 mm 0 cm
Dec. 23 Partly cloudy
Partly cloudy
 9° /3° 0 mm 0 cm
Dec. 24 Partly cloudy
Partly cloudy
 11° /1° 0 mm 0 cm
Dec. 25 Patchy rain possible
Patchy rain possible
 11° /-1° 0.3 mm 0.2 cm
Dec. 26 Sunny
Sunny
 7° /-4° 0.1 mm 0.1 cm
Dec. 27 Partly cloudy
Partly cloudy
 8° /-1° 0 mm 0 cm
Dec. 28 Sunny
Sunny
 7° /-1° 0 mm 0 cm
Dec. 29 Partly cloudy
Partly cloudy
 7° /-2° 0 mm 0 cm
Dec. 30 Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-4° 10.8 mm 3.8 cm
Dec. 31 Thundery outbreaks possible
Thundery outbreaks possible
 -1° /-6° 0 mm 0 cm
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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.
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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 ❄️
On average, Casper sees 4 snowy days during December, with approximately 5.9 cm of total snowfall.

December rainfall patterns in Casper

Explore the daily rainfall trends and prepare for Caspers December weather 💧
Typically, Casper has 1 rainy days in December with a total of 16.2 mm of rainfall.

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Location coordinates 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.

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