Climate almanac
Rock Springs
Wyoming, United States · 41.59°, -109.20°
What is the weather like in Rock Springs in September?
In September, Rock Springs is typically 75°F (24°C) during the day and 49°F (9°C) at night. The month brings about 0.8 in (21 mm) of precipitation in total. Snowfall averages about 0.5 in (12 mm) over the month.
- Average high75°F (24°C)
- Average low49°F (9°C)
- Precipitation0.8 in (21 mm)
- Clear or mostly clear days20
- Snowfall0.5 in (12 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)