How warm is it in Aspen in December?

Daytime highs averaged -4.8 °C, night-time lows -15.8 °C. The highest value of the past 10 years was 7.9 °C (2 Dec 2021), the lowest -28.5 °C (16 Dec 2022).

How often does it rain in Aspen in December?

On average there were 10.3 rain days (at least 1 mm) with 54.4 mm of precipitation in total.

Holiday Weather Rewind

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Aspen weather in December: temperature & rain

Photo: Jeffrey Beall · CC BY 4.0

🇺🇸 Weather in Aspen in December

This is what the weather in Aspen (Colorado, USA) was like in December over the years 2016–2025.

Key facts at a glance

Prevailing weather: Snow

Avg. daytime high

-4.8 °C

-7.0 °C – -1.4 °C

Avg. night-time low

-15.8 °C

-18.7 °C – -11.6 °C

Avg. rain days in period

10.3

33 % of days · ≥ 1.0 mm

Avg. precipitation in period

54.4 mm

26.6 mm – 127 mm

Avg. cloud cover

57 %

This data source has no sunshine hours – average cloud cover is shown instead.

Avg. sea temperature

–

No sea nearby – no sea temperature.

Extremes: Highest temperature 7.9 °C (2 Dec 2021) · Lowest temperature -28.5 °C (16 Dec 2022) · Avg. daily peak wind 14 km/h

Weather mix of all days

70Sunny
95Partly cloudy
42Cloudy
2Light rain
101Snow

Summary

On average -4.8 °C during the day and -15.8 °C at night.
On average 10.3 rain days (Rain day = at least 1.0 mm of precipitation) with 54.4 mm of precipitation in total.
Prevailing weather: Snow.
Warmest year: 2025 (avg. -1.4 °C), coolest: 2018 (avg. -7.0 °C).
Wettest year: 2021 (127 mm), driest: 2017 (26.6 mm).
Extremes: 7.9 °C on 2 Dec 2021 and -28.5 °C on 16 Dec 2022.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2025
Avg. max-1.4°Avg. min-11.6°
Rain days
6 Rain days
Precipitation
29.4 mm
Avg. cloud cover
58 % cloudy
Sea temperature
–
Max 5.1 °C · Min -19.7 °C
2024
Avg. max-4.2°Avg. min-15.5°
Rain days
9 Rain days
Precipitation
27.9 mm
Avg. cloud cover
48 % cloudy
Sea temperature
–
Max 0.1 °C · Min -25.0 °C
2023
Avg. max-4.8°Avg. min-14.8°
Rain days
8 Rain days
Precipitation
38.6 mm
Avg. cloud cover
54 % cloudy
Sea temperature
–
Max 0.3 °C · Min -26.4 °C
2022
Avg. max-6.9°Avg. min-17.9°
Rain days
17 Rain days
Precipitation
83.4 mm
Avg. cloud cover
62 % cloudy
Sea temperature
–
Max -0.4 °C · Min -28.5 °C
2021
Avg. max-3.9°Avg. min-14.8°
Rain days
16 Rain days
Precipitation
127 mm
Avg. cloud cover
59 % cloudy
Sea temperature
–
Max 7.9 °C · Min -26.9 °C
2020
Avg. max-4.4°Avg. min-15.9°
Rain days
11 Rain days
Precipitation
42.3 mm
Avg. cloud cover
52 % cloudy
Sea temperature
–
Max 6.6 °C · Min -25.6 °C
2019
Avg. max-6.2°Avg. min-16.7°
Rain days
10 Rain days
Precipitation
46.3 mm
Avg. cloud cover
59 % cloudy
Sea temperature
–
Max -0.2 °C · Min -25.6 °C
2018
Avg. max-7.0°Avg. min-18.4°
Rain days
9 Rain days
Precipitation
35.4 mm
Avg. cloud cover
57 % cloudy
Sea temperature
–
Max 0.0 °C · Min -25.2 °C
2017
Avg. max-2.1°Avg. min-13.4°
Rain days
4 Rain days
Precipitation
26.6 mm
Avg. cloud cover
52 % cloudy
Sea temperature
–
Max 4.9 °C · Min -20.0 °C
2016
Avg. max-6.9°Avg. min-18.7°
Rain days
13 Rain days
Precipitation
87.0 mm
Avg. cloud cover
64 % cloudy
Sea temperature
–
Max -1.3 °C · Min -28.3 °C

Frequently asked questions

How warm is it in Aspen in December?: Daytime highs averaged -4.8 °C, night-time lows -15.8 °C. The highest value of the past 10 years was 7.9 °C (2 Dec 2021), the lowest -28.5 °C (16 Dec 2022).
How often does it rain in Aspen in December?: On average there were 10.3 rain days (at least 1 mm) with 54.4 mm of precipitation in total.

Check your exact travel dates

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Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. Snow depth is the model value for the grid cell, not the depth on the slopes. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)