Climate almanac
Chillicothe
Illinois, United States · 40.92°, -89.49°
What is the weather like in Chillicothe in May?
In May, Chillicothe is typically 74°F (23°C) during the day and 55°F (13°C) at night. The month brings about 4.9 in (125 mm) of precipitation in total.
- Average high74°F (23°C)
- Average low55°F (13°C)
- Precipitation4.9 in (125 mm)
- Clear or mostly clear days9
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)