Climate almanac
Lafayette
Colorado, United States · 39.99°, -105.09°
What is the weather like in Lafayette in September?
In September, Lafayette is typically 83°F (28°C) during the day and 53°F (11°C) at night. The month brings about 1.1 in (28 mm) of precipitation in total. Snowfall averages about 0.5 in (14 mm) over the month.
- Average high83°F (28°C)
- Average low53°F (11°C)
- Precipitation1.1 in (28 mm)
- Clear or mostly clear days19
- Snowfall0.5 in (14 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)