Weather Forecast and Radar for Chester, Illinois

Weather in Chester, IL

Chester, Illinois, United States experiences a seasonal climate, with warm, humid summers and cold, snowy winters.

In the winter months, temperatures typically range from 28-39 degrees Fahrenheit, with occasional snowfall. February is typically the coldest month, with temperatures dropping to an average low of 17 degrees Fahrenheit.

In the spring, temperatures range from 42-63 degrees Fahrenheit, with occasional rain showers. April is typically the wettest month of the year, with an average rainfall of 4 inches over the course of the month.

In the summer months, temperatures typically range from 68-88 degrees Fahrenheit, with occasional thunderstorms. July is the warmest month, with an average high of 88 degrees Fahrenheit.

In the autumn months, temperatures typically range from 43-68 degrees Fahrenheit, with occasional rain showers. October is typically the wettest month of the year, with an average rainfall of 4 inches over the course of the month.

Overall, Chester, Illinois experiences a moderate, seasonal climate with occasional rain and snow throughout the year.

Fast Facts About Chester, IL

As of 2020, the city population is 8264.

Major Cities Nearby Chester, IL

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