Weather Forecast and Radar for Chatham, Illinois

Weather in Chatham, IL

Chatham, Illinois has a temperate climate, with all four seasons being represented throughout the year. Summers in Chatham tend to be hot and humid, with average highs in the upper 80s and lows in the mid-60s. June, July and August are the hottest months, and occasionally temperatures can reach the 90s. Winters in Chatham are cold, with average highs in the mid-30s and lows in the mid-teens. January is usually the coldest month, with temperatures sometimes dropping below zero. Spring and fall are mild with average highs in the low- to mid-60s and lows in the upper 40s. Rainfall is fairly consistent throughout the year, with around 4 inches per month. Snowfall is also possible, with an average of 12 inches per year.

Fast Facts About Chatham, IL

As of 2020, the city population is 13231.

Major Cities Nearby Chatham, IL

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Chatham, Illinois.