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Weather in Rocky Mountain National Park, Colorado for December 2025

Your guide to Rocky Mountain National Park weather in December - trends and predictions

    Snow Forecast ❄️

  • Rocky Mountain National Park typically experiences moderate snowfall in December, with an average of 6 snowy days.
    According to Rocky Mountain National Park snow forecast for December 2025, 3 snowy days are expected until the end of the month. The closest date with snow is Thursday, December 25.

    • Temperatures

  • Until now, December 2025 in Rocky Mountain National Park is slightly cooler than the historical average by -0.6 °F.

  • Expect cooler weather in the next days in Rocky Mountain National Park with the forecast suggesting a temperature of 4.5 °F, lower than the historical average.

  • In general, the average temperature in Rocky Mountain National Park at the beginning of December is 2.4 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 4.3 °F by the end of December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
21
Dry days
Average rainy days
4
Rainy days
Average snowy days
6
Snow days
Average temperatures
2°/-7°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
52 %
Avg humidity

Rocky Mountain National Park Weather December

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

Temperatures trend during December in Rocky Mountain National Park

See the weather trend as well as the moving average line

December weather in Rocky Mountain National Park day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Sunny
Sunny
 2° /-8° 0 mm 0 cm
Dec. 2 Sunny
Sunny
 3° /-7° 0 mm 0 cm
Dec. 3 Sunny
Sunny
 2° /-10° 8.4 mm 6 cm
Dec. 4 Sunny
Sunny
 2° /-9° 0 mm 0 cm
Dec. 5 Overcast
Overcast
 3° /-7° 0.6 mm 0.1 cm
Dec. 6 Sunny
Sunny
 3° /-7° 4.4 mm 0.7 cm
Dec. 7 Sunny
Sunny
 2° /-8° 0 mm 0 cm
Dec. 8 Partly cloudy
Partly cloudy
 1° /-5° 0 mm 0 cm
Dec. 9 Light freezing rain
Light freezing rain
 -2° /-9° 0.2 mm 0 cm
Dec. 10 Light freezing rain
Light freezing rain
 -2° /-7° 0.2 mm 0 cm
Dec. 11 Overcast
Overcast
 3° /-5° 0 mm 0 cm
Dec. 12 Cloudy
Cloudy
 3° /-6° 0 mm 0 cm
Dec. 13 Light freezing rain
Light freezing rain
 3° /-4° 0.1 mm 0 cm
Dec. 14 Partly cloudy
Partly cloudy
 7° /-4° 0 mm 0 cm
Dec. 15 Light freezing rain
Light freezing rain
 4° /-3° 0.4 mm 0 cm
Dec. 16 Partly cloudy
Partly cloudy
 2° /-5° 0 mm 0 cm
Dec. 17 Patchy moderate snow
Patchy moderate snow
 2° /-4° 8.8 mm 0.4 cm
Dec. 18 Cloudy
Cloudy
 1° /-9° 0.9 mm 0.6 cm
Dec. 19 Sunny
Sunny
 5° /-4° 0 mm 0 cm
Dec. 20 Partly cloudy
Partly cloudy
 6° /-4° 0 mm 0 cm
Dec. 21 Sunny
Sunny
 8° /-2° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 8° /3° 0 mm 0 cm
Dec. 23 Sunny
Sunny
 8° /1° 0 mm 0 cm
Dec. 24 Sunny
Sunny
 8° /2° 0 mm 0 cm
Dec. 25 Patchy rain possible
Patchy rain possible
 7° /1° 0.2 mm 0 cm
Dec. 26 Patchy rain possible
Patchy rain possible
 4° /0° 0.2 mm 0 cm
Dec. 27 Sunny
Sunny
 6° /-1° 0 mm 0 cm
Dec. 28 Sunny
Sunny
 7° /-1° 0 mm 0 cm
Dec. 29 Heavy snow
Heavy snow
 2° /-3° 4.6 mm 3.3 cm
Dec. 30 Patchy light snow
Patchy light snow
 -1° /-8° 0.5 mm 0.3 cm
Dec. 31 Sunny
Sunny
 5° /-8° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Rocky Mountain National Park 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 Rocky Mountain National Park forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Rocky Mountain National Park in December - FAQ

What are the expected maximum and minimum temperatures in Rocky Mountain National Park during December?
Brace for cold days with temperatures not exceeding 2° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Rocky Mountain National Park during December?
In December, Rocky Mountain National Park can expect light to moderate rainfall, totaling 24.8 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Rocky Mountain National Park in December 2025?
Rocky Mountain National Park experiences an average snowfall of 7.7 cm during December, occurring over 6 days.
What are the typical wind conditions in Rocky Mountain National Park during December?
The average wind speed in Rocky Mountain National Park during December is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

Rocky Mountain National Park snow forecast December 2025

Track daily snowfall levels and discover Rocky Mountain National Park’s snowy potential this December ❄️
On average, Rocky Mountain National Park sees 6 snowy days during December, with approximately 7.7 cm of total snowfall.

December rainfall patterns in Rocky Mountain National Park

Explore the daily rainfall trends and prepare for Rocky Mountain National Parks December weather 💧
Typically, Rocky Mountain National Park has 4 rainy days in December with a total of 24.8 mm of rainfall.

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Location coordinates Where is Rocky Mountain National Park?

Get accurate weather forecasts for Rocky Mountain National Park, located at latitude 40.343 and longitude -105.684. Stay updated with localized weather information tailored for Rocky Mountain National Park.

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