Rocky Mountain National Park (CO)
December
Weather in Rocky Mountain National Park, Colorado for December 2026
Your guide to Rocky Mountain National Park weather in December - trends and predictions
The climate of Rocky Mountain National Park in December is quite snowy, averaging 12 snowy days.
In general, the average temperature in Rocky Mountain National Park at the beginning of December is 2.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 1.4 °C by the end of December.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
More
19
Dry days
0
Rainy days
12
Snow days
2°/-5°
Temperatures
25 km/h
Avg max wind
55 %
Avg humidity
Rocky Mountain National Park Weather December
Move between months or click on a day
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
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 2° /-8° | 0 mm | 0 cm | |
| Dec. 2 | Sunny | 3° /-7° | 0 mm | 0 cm | |
| Dec. 3 | Sunny | 2° /-10° | 8.4 mm | 6 cm | |
| Dec. 4 | Sunny | 2° /-9° | 0 mm | 0 cm | |
| Dec. 5 |  Overcast | 3° /-7° | 0.6 mm | 0.1 cm | |
| Dec. 6 | Sunny | 3° /-7° | 4.4 mm | 0.7 cm | |
| Dec. 7 | Sunny | 2° /-8° | 0 mm | 0 cm | |
| Dec. 8 |  Partly cloudy | 1° /-5° | 0 mm | 0 cm | |
| Dec. 9 |  Light freezing rain | -2° /-9° | 0.2 mm | 0 cm | |
| Dec. 10 | Light freezing rain | -2° /-7° | 0.2 mm | 0 cm | |
| Dec. 11 | Overcast | 3° /-5° | 0 mm | 0 cm | |
| Dec. 12 |  Cloudy | 3° /-6° | 0 mm | 0 cm | |
| Dec. 13 | Light freezing rain | 3° /-4° | 0.1 mm | 0 cm | |
| Dec. 14 | Partly cloudy | 7° /-4° | 0 mm | 0 cm | |
| Dec. 15 | Light freezing rain | 4° /-3° | 0.4 mm | 0 cm | |
| Dec. 16 | Partly cloudy | 2° /-5° | 0 mm | 0 cm | |
| Dec. 17 |  Patchy moderate snow | 2° /-4° | 8.8 mm | 0.4 cm | |
| Dec. 18 | Cloudy | 1° /-9° | 0.9 mm | 0.6 cm | |
| Dec. 19 | Sunny | 5° /-4° | 0 mm | 0 cm | |
| Dec. 20 | Partly cloudy | 4° /-3° | 14.8 mm | 8 cm | |
| Dec. 21 | Sunny | 6° /-3° | 0 mm | 0 cm | |
| Dec. 22 | Overcast | 7° /-1° | 0 mm | 0 cm | |
| Dec. 23 | Light freezing rain | 6° /-1° | 0.1 mm | 0 cm | |
| Dec. 24 | Overcast | 4° /-2° | 0 mm | 0 cm | |
| Dec. 25 |  Moderate or heavy rain shower | 3° /-2° | 3.5 mm | 0.7 cm | |
| Dec. 26 | Patchy moderate snow | 2° /-3° | 0.7 mm | 0.5 cm | |
| Dec. 27 | Partly cloudy | 0° /-5° | 4.5 mm | 3.1 cm | |
| Dec. 28 | Light freezing rain | -1° /-10° | 9.6 mm | 6.4 cm | |
| Dec. 29 | Light freezing rain | 2° /-7° | 2 mm | 0.8 cm | |
| Dec. 30 | Light freezing rain | 3° /-7° | 1.5 mm | 0.8 cm | |
| Dec. 31 | Partly cloudy | 1° /-7° | 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
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?
Moderate rainfall is anticipated in Rocky Mountain National Park during December, with a total of 60.6 mm spread over approximately 0 days. Considering plans for rainy days is advisable.
Will it snow in Rocky Mountain National Park in December 2026?
Rocky Mountain National Park experiences an average snowfall of 28.23 cm during December, occurring over 12 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 25 km/h, suggesting breezy to windy conditions, depending on your activities.
Rocky Mountain National Park snow forecast December 2026
Track daily snowfall levels and discover Rocky Mountain National Park’s snowy potential this December ❄️
On average, Rocky Mountain National Park sees 12 snowy days during December, with approximately 28.2 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 💧
Quick links
More Rocky Mountain National Park weather pages
You are here
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.
Found a mistake?
We appreciate your attention to details. Tell us here.