How warm is it in Aspen in August?

Daytime highs averaged 20.7 °C, night-time lows 5.4 °C. The highest value of the past 10 years was 26.7 °C (21 Aug 2025), the lowest -1.8 °C (21 Aug 2021).

How often does it rain in Aspen in August?

On average there were 10.3 rain days (at least 1 mm) with 45.9 mm of precipitation in total.

Holiday Weather Rewind

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Aspen weather in August: temperature & rain

Photo: Jeffrey Beall · CC BY 4.0

🇺🇸 Weather in Aspen in August

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

Key facts at a glance

Prevailing weather: Partly cloudy

Avg. daytime high

20.7 °C

18.9 °C – 22.6 °C

Avg. night-time low

5.4 °C

4.2 °C – 6.7 °C

Avg. rain days in period

10.3

33 % of days · ≥ 1.0 mm

Avg. precipitation in period

45.9 mm

20.0 mm – 87.4 mm

Avg. cloud cover

48 %

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 26.7 °C (21 Aug 2025) · Lowest temperature -1.8 °C (21 Aug 2021) · Avg. daily peak wind 11 km/h

Weather mix of all days

81Sunny
99Partly cloudy
7Cloudy
77Light rain
25Rain
1Snow

Summary

On average 20.7 °C during the day and 5.4 °C at night.
On average 10.3 rain days (Rain day = at least 1.0 mm of precipitation) with 45.9 mm of precipitation in total.
Prevailing weather: Partly cloudy.
Warmest year: 2020 (avg. 22.6 °C), coolest: 2017 (avg. 18.9 °C).
Wettest year: 2024 (87.4 mm), driest: 2020 (20.0 mm).
Extremes: 26.7 °C on 21 Aug 2025 and -1.8 °C on 21 Aug 2021.

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. max22.3°Avg. min6.7°
Rain days
11 Rain days
Precipitation
34.6 mm
Avg. cloud cover
–
Sea temperature
–
Max 26.5 °C · Min 3.6 °C
2025
Avg. max21.2°Avg. min5.0°
Rain days
7 Rain days
Precipitation
33.3 mm
Avg. cloud cover
50 % cloudy
Sea temperature
–
Max 26.7 °C · Min 0.3 °C
2024
Avg. max19.8°Avg. min5.6°
Rain days
17 Rain days
Precipitation
87.4 mm
Avg. cloud cover
55 % cloudy
Sea temperature
–
Max 26.4 °C · Min 0.1 °C
2023
Avg. max20.7°Avg. min5.3°
Rain days
14 Rain days
Precipitation
54.0 mm
Avg. cloud cover
46 % cloudy
Sea temperature
–
Max 24.8 °C · Min 0.2 °C
2022
Avg. max20.8°Avg. min5.9°
Rain days
13 Rain days
Precipitation
61.3 mm
Avg. cloud cover
53 % cloudy
Sea temperature
–
Max 25.5 °C · Min 2.2 °C
2021
Avg. max20.0°Avg. min4.8°
Rain days
7 Rain days
Precipitation
49.9 mm
Avg. cloud cover
39 % cloudy
Sea temperature
–
Max 24.4 °C · Min -1.8 °C
2020
Avg. max22.6°Avg. min6.1°
Rain days
6 Rain days
Precipitation
20.0 mm
Avg. cloud cover
42 % cloudy
Sea temperature
–
Max 24.9 °C · Min 2.1 °C
2019
Avg. max20.8°Avg. min5.9°
Rain days
6 Rain days
Precipitation
22.0 mm
Avg. cloud cover
42 % cloudy
Sea temperature
–
Max 24.3 °C · Min 0.4 °C
2018
Avg. max19.8°Avg. min4.7°
Rain days
9 Rain days
Precipitation
55.1 mm
Avg. cloud cover
48 % cloudy
Sea temperature
–
Max 24.9 °C · Min -0.3 °C
2017
Avg. max18.9°Avg. min4.2°
Rain days
13 Rain days
Precipitation
41.3 mm
Avg. cloud cover
53 % cloudy
Sea temperature
–
Max 22.7 °C · Min 1.5 °C

Frequently asked questions

How warm is it in Aspen in August?: Daytime highs averaged 20.7 °C, night-time lows 5.4 °C. The highest value of the past 10 years was 26.7 °C (21 Aug 2025), the lowest -1.8 °C (21 Aug 2021).
How often does it rain in Aspen in August?: On average there were 10.3 rain days (at least 1 mm) with 45.9 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)