Climate almanac
Chester
Illinois, United States · 37.91°, -89.82°
What is the weather like in Chester in January?
In January, Chester is typically 42°F (6°C) during the day and 28°F (-2°C) at night. The month brings about 3.6 in (91 mm) of precipitation in total. Snowfall averages about 3.7 in (94 mm) over the month.
- Average high42°F (6°C)
- Average low28°F (-2°C)
- Precipitation3.6 in (91 mm)
- Clear or mostly clear days9
- Snowfall3.7 in (94 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)