Aspen weather in August
August in Aspen: warm, a little rain, with clean air — one of the weakest months to visit.
#11 of 12 months in Aspen · #596 of 604 destinations to visit in August · comfort 18/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Aspen climate normals — August
| Daytime high | 25°C / 78°F | 🌤 warm |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Feels like (high) | 24°C / 75°F | |
| Rainfall | 50 mm / 2 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 63% | 💧 humid |
| Dew point | 9°C / 48°F | |
| Sunshine | 12.3 h/day | |
| Daylight | 13.7 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Aspen in August — FAQ
- Is August a good time to visit Aspen?
- August in Aspen: warm, a little rain, with clean air — one of the weakest months to visit. It ranks #11 of 12 months for Aspen on SeasonMap's comfort score (18/100).
- What is the weather like in Aspen in August?
- In August, Aspen averages a daily high of 25.3°C and a low of 10°C, with about 50.2 mm of rain over roughly 10 rainy days.
- What is the air quality in Aspen in August?
- Aspen has a mean US Air Quality Index of about 44 in August.