Weather Forecast and Radar for Waukegan, Illinois

Weather in Waukegan, IL

Waukegan, Illinois, United States experiences all four seasons. In the winter, temperatures generally range from the low 20s to the mid-30s. January is the coldest month of the year, with an average low of 16°F and an average high of 30°F. During the spring, temperatures generally range from the mid-30s to the low-50s. April is the warmest month in the spring, with an average low of 37°F and an average high of 53°F. During the summer, temperatures generally range from the mid-60s to the low-80s. July is the hottest month of the year, with an average low of 62°F and an average high of 81°F. During the autumn, temperatures generally range from the mid-40s to the mid-60s. October is the warmest month of the autumn, with an average low of 44°F and an average high of 63°F.

Fast Facts About Waukegan, IL

As of 2020, the city population is 87157.

Major Cities Nearby Waukegan, IL

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