Climate almanac
Chillicothe
Illinois, US · 40.92°, -89.49°
What is the climate like in Chillicothe?
Chillicothe is warmest in July, when daily highs average 85°F (29°C), and coolest in January, when lows fall to about 20°F (-6°C). The wettest month is typically May and the driest is November; the year sees roughly 40 in of precipitation.
- Warmest monthJuly — average high 85°F (29°C)
- Coolest monthJanuary — average low 20°F (-6°C)
- Wettest monthMay (4.9 in)
- Driest monthNovember (2.1 in)
- Annual precipitation40 in