Climate almanac
St. Charles
Illinois, United States · 41.91°, -88.31°
What is the weather like in St. Charles in January?
In January, St. Charles is typically 32°F (0°C) during the day and 19°F (-7°C) at night. The month brings about 2.5 in (64 mm) of precipitation in total. Snowfall averages about 9.2 in (234 mm) over the month.
- Average high32°F (0°C)
- Average low19°F (-7°C)
- Precipitation2.5 in (64 mm)
- Clear or mostly clear days6
- Snowfall9.2 in (234 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)