Climate almanac
Saint Louis
Michigan, United States · 43.41°, -84.61°
What is the weather like in Saint Louis in September?
In September, Saint Louis is typically 75°F (24°C) during the day and 55°F (13°C) at night. The month brings about 2.8 in (72 mm) of precipitation in total.
- Average high75°F (24°C)
- Average low55°F (13°C)
- Precipitation2.8 in (72 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)