Monthly climate guide
Aspen weather in August
August in Aspen is typically mild, with average daytime highs around 20°C (67°F) and night-time lows near 5°C (41°F). The month usually brings about 42 mm of rain (fairly dry) and is a mix of sun and cloud. Daytime highs are about the same as July and 4°C warmer than September.
What stands out in August
- Aspen is usually about 9°C cooler than Denver, 170 km away, in August.
- Expect a big gap between day and night — about 15°C.
- Seasonally, August counts as late summer in Aspen.
- August is Aspen's second warmest month.
Avg high
20°C
67°F
Avg low
5°C
41°F
Rainfall
42 mm
fairly dry
Humidity
58%
relative
Sky
52%
cloud · a mix of sun and cloud
Aspen weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | -6°C / 20°F | -18°C / 0°F | 51 mm | 90% | 56% |
| February | -6°C / 20°F | -18°C / -1°F | 48 mm | 95% | 64% |
| March | -2°C / 29°F | -14°C / 7°F | 48 mm | 89% | 61% |
| April | 3°C / 38°F | -8°C / 17°F | 53 mm | 75% | 67% |
| May | 10°C / 49°F | -4°C / 25°F | 48 mm | 65% | 62% |
| June | 18°C / 65°F | 2°C / 35°F | 16 mm | 49% | 43% |
| July | 21°C / 70°F | 6°C / 42°F | 46 mm | 59% | 53% |
| August | 20°C / 67°F | 5°C / 41°F | 42 mm | 58% | 52% |
| September | 16°C / 61°F | 1°C / 34°F | 41 mm | 57% | 43% |
| October | 8°C / 46°F | -5°C / 24°F | 37 mm | 62% | 47% |
| November | 0°C / 33°F | -11°C / 12°F | 40 mm | 74% | 50% |
| December | -6°C / 21°F | -17°C / 1°F | 47 mm | 86% | 58% |
What to pack for August
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
Is August a good time to visit Aspen?
Compare the months in the chart above to find your ideal window.
Best time to visit Aspen →Other United States cities in August
Cite or embed this data
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Aspen weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/aspen/august
<a href="https://weathercompare.eu/weather/usa/aspen/august">Aspen weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/aspen" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Aspen weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/aspen/august">Aspen weather in August</a> – WeatherCompare</p>
Aspen in August: quick answers
Is August a good time to visit Aspen?
Yes. August is one of the best months for Aspen, with highs around 20°C and about 42 mm of rain.
How warm is Aspen in August?
Average highs are about 20°C (67°F) and average lows about 5°C (41°F), based on 10 years of daily data.
Does it rain a lot in Aspen in August?
Aspen typically gets around 42 mm of rain in August — fairly dry.
Figures are long-term averages for the area around Aspen (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.