Climate almanac
Spearfish
South Dakota, United States · 44.49°, -103.86°
What is the weather like in Spearfish in September?
In September, Spearfish is typically 76°F (25°C) during the day and 51°F (10°C) at night. The month brings about 1.8 in (46 mm) of precipitation in total. Snowfall averages about 0.2 in (4 mm) over the month.
- Average high76°F (25°C)
- Average low51°F (10°C)
- Precipitation1.8 in (46 mm)
- Clear or mostly clear days17
- Snowfall0.2 in (4 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)