Weather Forecast and Radar for DeKalb, Illinois

Weather in DeKalb, IL

DeKalb, Illinois experiences a wide range of temperatures throughout the year. In the winter months, December through February, temperatures range from an average low of 18°F to an average high of 34°F. During the spring months, March through May, temperatures range from an average low of 33°F to an average high of 64°F. In the summer months, June through August, temperatures range from an average low of 52°F to an average high of 82°F. Finally, in the fall months, September through November, temperatures range from an average low of 41°F to an average high of 68°F.

Fast Facts About DeKalb, IL

As of 2020, the city population is 66624.

Major Cities Nearby DeKalb, IL

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