Climate almanac
Helena Valley West Central
Montana, United States · 46.66°, -112.06°
What is the weather like in Helena Valley West Central in September?
In September, Helena Valley West Central is typically 74°F (23°C) during the day and 46°F (8°C) at night. The month brings about 1.5 in (39 mm) of precipitation in total. Snowfall averages about 0.9 in (24 mm) over the month.
- Average high74°F (23°C)
- Average low46°F (8°C)
- Precipitation1.5 in (39 mm)
- Clear or mostly clear days14
- Snowfall0.9 in (24 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)