Climate almanac
Aspen
Colorado, United States · 39.19°, -106.82°
What is the weather like in Aspen in September?
In September, Aspen is typically 62°F (17°C) during the day and 36°F (2°C) at night. The month brings about 1.5 in (39 mm) of precipitation in total. Snowfall averages about 1.0 in (24 mm) over the month.
- Average high62°F (17°C)
- Average low36°F (2°C)
- Precipitation1.5 in (39 mm)
- Clear or mostly clear days19
- Snowfall1.0 in (24 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)