Climate almanac
Boulder
Colorado, United States · 40.01°, -105.27°
What is the weather like in Boulder in October?
In October, Boulder is typically 62°F (17°C) during the day and 35°F (2°C) at night. The month brings about 1.5 in (38 mm) of precipitation in total. Snowfall averages about 4.6 in (118 mm) over the month.
- Average high62°F (17°C)
- Average low35°F (2°C)
- Precipitation1.5 in (38 mm)
- Clear or mostly clear days19
- Snowfall4.6 in (118 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)