Weather in Aspen in December 2025
- December is usually the wettest month of the year in Aspen;
Average weather
Average temperature in Aspen in December
The temperature in December is +36°F on average, with a range between a maximum of +50°F during the day and a minimum of 0°F at night.
The average maximum temperature goes up 18% by the end of the month, compared with the beginning of the month, from +30°F to +39°F.
Is Aspen warm or cold in December?
Aspen is typically chill in December.
Maximum temperatures go down compared to the previous month from +41°F to +32°F. The minimum temperature also goes down from +18°F to +12°F.
Pack a jumper and a jacket as there will be cooler temperatures.
December is one of the coolest months in Aspen, here is the comparison with other months:
Climate in Aspen in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +41°F | +32°F | +32°F | ||||
| Min. temperature | ||||||
| -18°F | -18°F | -18°F | ||||
| Max. temperature | ||||||
| +64°F | +57°F | +55°F | ||||
| Rainfall | ||||||
| 11 mm | 3 mm | 3 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 67% | 71% | 70% | ||||
| Air pressure | ||||||
| 1018 HPa | 1019 HPa | 1019 HPa | ||||
| Sunny days | ||||||
| 10 | 8 | 8 | ||||
| Cloudy days | ||||||
| 6 | 7 | 8 | ||||
| Rainy days | ||||||
| 1 | 0 | 0 | ||||
| Snowy days | ||||||
| 12 | 15 | 15 | ||||
December weather is still as ok as in November. It’s getting colder in December. From +41°F in the day, the average maximum temperature lowers to +32°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 11 mm to 3 mm. Humidity rises from 67% to 71%. The average wind speed doesn’t change much during December, staying around 1 m/s. The days becoming less sunny, going from 10 sunny days in November to 8 in December.
January brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Aspen is gradually increasing during December, going from 1 m/s to 2 m/s over the course of the month.
Rain
Snow
December is one of the snowiest months in Aspen.
Here’s how December is compared with other months in the amount of snow, total mm:
How was the weather last December in Aspen?
Climate Change Over the Years
The climate in Aspen in December has not changed that much over the last 43 years.
The average temperature was the lowest in 1984 (+49°F) and the highest in 2021 (+58°F). The driest year was 2020 with only 230 mm of rainfall, and the wettest year was 2015 with 576 mm.
FAQ
Is December a good time to visit Aspen?
Can you sunbathe in Aspen in December?
Is Aspen rainy in December?
Is it sunny in Aspen in December?
Other cities in USA
Monthly weather in Aspen
Source of the data
For this page, we’ve looked at the typical weather in Aspen, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
