How warm is it in Aspen in January?

Daytime highs averaged -6.7 °C, night-time lows -18.0 °C. The highest value of the past 10 years was 1.7 °C (3 Jan 2026), the lowest -31.3 °C (20 Jan 2025).

How often does it rain in Aspen in January?

On average there were 9.9 rain days (at least 1 mm) with 50.1 mm of precipitation in total.

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Aspen weather in January: temperature & rain

Photo: Jeffrey Beall · CC BY 4.0

🇺🇸 Weather in Aspen in January

This is what the weather in Aspen (Colorado, USA) was like in January over the years 2017–2026.

Key facts at a glance

Prevailing weather: Partly cloudy

Avg. daytime high

-6.7 °C

-9.2 °C – -4.5 °C

Avg. night-time low

-18.0 °C

-21.8 °C – -15.7 °C

Avg. rain days in period

9.9

32 % of days · ≥ 1.0 mm

Avg. precipitation in period

50.1 mm

15.1 mm – 117 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 1.7 °C (3 Jan 2026) · Lowest temperature -31.3 °C (20 Jan 2025) · Avg. daily peak wind 14 km/h

Weather mix of all days

63Sunny
107Partly cloudy
41Cloudy
99Snow

Summary

On average -6.7 °C during the day and -18.0 °C at night.
On average 9.9 rain days (Rain day = at least 1.0 mm of precipitation) with 50.1 mm of precipitation in total.
Prevailing weather: Partly cloudy.
Warmest year: 2018 (avg. -4.5 °C), coolest: 2025 (avg. -9.2 °C).
Wettest year: 2017 (117 mm), driest: 2022 (15.1 mm).
Extremes: 1.7 °C on 3 Jan 2026 and -31.3 °C on 20 Jan 2025.

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

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max-4.7°Avg. min-15.7°
Rain days
6 Rain days
Precipitation
37.3 mm
Avg. cloud cover
50 % cloudy
Sea temperature
–
Max 1.7 °C · Min -26.2 °C
2025
Avg. max-9.2°Avg. min-21.8°
Rain days
5 Rain days
Precipitation
18.3 mm
Avg. cloud cover
45 % cloudy
Sea temperature
–
Max -0.9 °C · Min -31.3 °C
2024
Avg. max-7.0°Avg. min-17.4°
Rain days
11 Rain days
Precipitation
50.1 mm
Avg. cloud cover
61 % cloudy
Sea temperature
–
Max 0.0 °C · Min -30.9 °C
2023
Avg. max-7.8°Avg. min-18.0°
Rain days
14 Rain days
Precipitation
80.9 mm
Avg. cloud cover
68 % cloudy
Sea temperature
–
Max -0.8 °C · Min -26.7 °C
2022
Avg. max-5.8°Avg. min-17.3°
Rain days
6 Rain days
Precipitation
15.1 mm
Avg. cloud cover
46 % cloudy
Sea temperature
–
Max 0.1 °C · Min -26.7 °C
2021
Avg. max-6.8°Avg. min-18.6°
Rain days
9 Rain days
Precipitation
27.3 mm
Avg. cloud cover
58 % cloudy
Sea temperature
–
Max -0.6 °C · Min -24.2 °C
2020
Avg. max-7.2°Avg. min-19.5°
Rain days
9 Rain days
Precipitation
42.7 mm
Avg. cloud cover
62 % cloudy
Sea temperature
–
Max -2.0 °C · Min -25.3 °C
2019
Avg. max-6.7°Avg. min-17.9°
Rain days
14 Rain days
Precipitation
63.4 mm
Avg. cloud cover
56 % cloudy
Sea temperature
–
Max -1.0 °C · Min -28.1 °C
2018
Avg. max-4.5°Avg. min-16.4°
Rain days
8 Rain days
Precipitation
48.8 mm
Avg. cloud cover
52 % cloudy
Sea temperature
–
Max -0.2 °C · Min -25.4 °C
2017
Avg. max-7.4°Avg. min-17.0°
Rain days
17 Rain days
Precipitation
117 mm
Avg. cloud cover
69 % cloudy
Sea temperature
–
Max -2.4 °C · Min -28.4 °C

Frequently asked questions

How warm is it in Aspen in January?: Daytime highs averaged -6.7 °C, night-time lows -18.0 °C. The highest value of the past 10 years was 1.7 °C (3 Jan 2026), the lowest -31.3 °C (20 Jan 2025).
How often does it rain in Aspen in January?: On average there were 9.9 rain days (at least 1 mm) with 50.1 mm of precipitation in total.

Check your exact travel dates

Choose your travel period – we show the weather for exactly those days.

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)