Rocky Mountain National Park Weather in December

Thinking of visiting Rocky Mountain National Park in December? Expect very low temperatures reaching -3°C (27°F) during the day, dropping to -12°C (10°F) at night, and note that quite a bit of snowfall is likely.

Rainfall in Rocky Mountain National Park in December

You can expect snow on roughly 21 days based on historical data, averaging 103 mm (4.1 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Rocky Mountain National Park in December

Temperatures in Rocky Mountain National Park in December top out at -3°C (27°F) and drop to -12°C (10°F) overnight. December is in the winter season. Expect a distinctly cold feel throughout the day, not just overnight. Nights are well below freezing at -12°C (10°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation. This month is known for being the coldest, so make sure you pack appropriately with plenty of warm clothing.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Rocky Mountain National Park. Our weather planner can help you explore destinations with more pleasant weather conditions.

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• January
• February
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• May
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• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Rocky Mountain National Park's climate page.

Rocky Mountain National Park Temperature in December

Min Temperature -12°C (10°F)  

Max Temperature -3°C (27°F)  

Chance of Rain 69%  

Precipitation 103 mm (4.1 in)  

Rainy days 21 days  

What to Wear in Rocky Mountain National Park in December

We recommend you pack up your warm winter gear for Rocky Mountain National Park in December. If you have insulated boots, thermal layers, and a heavy winter coat that can handle snow and freezing temperatures it's smart to bring them. Don't forget gloves, a warm hat, and a scarf. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.

What To Do in Rocky Mountain National Park in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

1/10

Walking

1/10

Barbeque

1/10

Camping

1/10

Outdoor sports

1/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Rocky Mountain National Park's climate page.

More climate data for Rocky Mountain National Park

Temperature Rainfall

See the full Rocky Mountain National Park climate overview or explore weather in the United States of America.