Weather Forecast and Radar for Chillicothe, Illinois

Weather in Chillicothe, IL

Chillicothe, Illinois, United States enjoys four distinct seasons. Summers are hot and humid, with average temperatures in the mid-80s (Fahrenheit). Winters can be cold and snowy, with average temperatures in the high 20s and low 30s. Spring and fall are mild with temperatures in the mid-50s to mid-70s.

In the summer, temperatures can reach as high as the upper 90s and low 100s. During mid-summer, the humidity can be particularly oppressive. Thunderstorms are common during the summer months, often accompanied by strong winds and sometimes hail.

In the winter, temperatures can dip into the single digits, and even below 0 degrees Fahrenheit. The area can experience blizzards and ice storms, with snowfall ranging from a few inches to over a foot.

Spring and fall are mild and pleasant, with temperatures ranging from the mid-50s to mid 70s. The area often experiences rain during these months.

Overall, the weather in Chillicothe is generally pleasant year-round, with the exception of the hot and humid summers.

Fast Facts About Chillicothe, IL

As of 2020, the city population is 6326.

Major Cities Nearby Chillicothe, IL

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