Climate almanac
Chillicothe
Illinois, United States · 40.92°, -89.49°
What is the weather like in Chillicothe in January?
In January, Chillicothe is typically 33°F (1°C) during the day and 20°F (-6°C) at night. The month brings about 2.3 in (58 mm) of precipitation in total. Snowfall averages about 7.3 in (184 mm) over the month.
- Average high33°F (1°C)
- Average low20°F (-6°C)
- Precipitation2.3 in (58 mm)
- Clear or mostly clear days7
- Snowfall7.3 in (184 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)