Climate almanac
Saint Charles
Maryland, United States · 38.60°, -76.94°
What is the weather like in Saint Charles in September?
In September, Saint Charles is typically 80°F (26°C) during the day and 66°F (19°C) at night. The month brings about 4.0 in (101 mm) of precipitation in total.
- Average high80°F (26°C)
- Average low66°F (19°C)
- Precipitation4.0 in (101 mm)
- Clear or mostly clear days11
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)