Rocky Mountain National Park (CO)
December
Weather in Rocky Mountain National Park, Colorado for December 2025
Your guide to Rocky Mountain National Park weather in December - trends and predictions
Rocky Mountain National Park typically experiences moderate snowfall in December, with an average of 6 snowy days.
In general, the average temperature in Rocky Mountain National Park at the beginning of December is 6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of -0.1 °F by the end of December.
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Snow Forecast ❄️
Temperatures
More
21
Dry days
4
Rainy days
6
Snow days
2°/-7°
Temperatures
21 km/h
Avg max wind
52 %
Avg humidity
Rocky Mountain National Park Weather December
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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
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 4° /-7° | 0 mm | 0 cm | |
| Dec. 2 | Sunny | 7° /-7° | 0 mm | 0 cm | |
| Dec. 3 | Sunny | 8° /-7° | 0 mm | 0 cm | |
| Dec. 4 | Sunny | 6° /-5° | 0 mm | 0 cm | |
| Dec. 5 |  Overcast | 6° /-6° | 0 mm | 0 cm | |
| Dec. 6 | Sunny | 5° /-7° | 0 mm | 0 cm | |
| Dec. 7 | Sunny | 6° /-6° | 0 mm | 0 cm | |
| Dec. 8 |  Partly cloudy | 2° /-5° | 0 mm | 0 cm | |
| Dec. 9 |  Light freezing rain | -6° /-15° | 0.4 mm | 0 cm | |
| Dec. 10 | Light freezing rain | -7° /-14° | 0.5 mm | 0 cm | |
| Dec. 11 | Overcast | 0° /-9° | 0 mm | 0 cm | |
| Dec. 12 |  Cloudy | 2° /-8° | 0 mm | 0 cm | |
| Dec. 13 | Light freezing rain | 0° /-7° | 0.1 mm | 0 cm | |
| Dec. 14 | Partly cloudy | 4° /-8° | 0 mm | 0 cm | |
| Dec. 15 | Light freezing rain | 0° /-7° | 0.9 mm | 0 cm | |
| Dec. 16 | Partly cloudy | 1° /-9° | 0 mm | 0 cm | |
| Dec. 17 |  Patchy moderate snow | 0° /-5° | 3.9 mm | 0.9 cm | |
| Dec. 18 | Cloudy | 3° /-7° | 0 mm | 0 cm | |
| Dec. 19 | Sunny | 5° /-5° | 0 mm | 0 cm | |
| Dec. 20 | Partly cloudy | 6° /-4° | 0 mm | 0 cm | |
| Dec. 21 | Sunny | 8° /-3° | 0 mm | 0 cm | |
| Dec. 22 | Overcast | 5° /-3° | 0 mm | 0 cm | |
| Dec. 23 | Light freezing rain | 2° /-4° | 0.2 mm | 0 cm | |
| Dec. 24 | Overcast | 3° /-5° | 0 mm | 0 cm | |
| Dec. 25 |  Moderate or heavy rain shower | 2° /-5° | 6.9 mm | 1.4 cm | |
| Dec. 26 | Patchy moderate snow | 2° /-5° | 1.4 mm | 0.9 cm | |
| Dec. 27 | Partly cloudy | -1° /-5° | 0.3 mm | 0 cm | |
| Dec. 28 | Light freezing rain | -1° /-7° | 3.4 mm | 1.5 cm | |
| Dec. 29 | Light freezing rain | 3° /-2° | 3.9 mm | 1.5 cm | |
| Dec. 30 | Light freezing rain | -1° /-10° | 2.9 mm | 1.5 cm | |
| Dec. 31 | Partly cloudy | -5° /-14° | 0 mm | 0 cm | |
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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.
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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 ❄️
December rainfall patterns in Rocky Mountain National Park
Explore the daily rainfall trends and prepare for Rocky Mountain National Parks December weather 💧
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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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