Weather Forecast and Radar for Johnsburg, Illinois

Weather in Johnsburg, IL

Johnsburg, Illinois experiences four distinct seasons year-round. In the winter months, temperatures average between 30-45°F during the day and can dip as low as 0°F overnight. Snowfall is common in December, January, and February, and temperatures can remain below freezing during these months.

In the spring, temperatures start to warm up and range between 40-60°F. April and May are the wettest months of the year, with plenty of rain and occasional thunderstorms.

In the summer months, temperatures reach between 75-90°F during the day and can be quite humid. July and August are the hottest months, and there is a chance of thunderstorms that can bring refreshing rain.

Fall is a beautiful time of year in Johnsburg. Temperatures range between 50-70°F and the leaves begin to change colors. The weather is milder in October and November, and rainfall is minimal.

Fast Facts About Johnsburg, IL

As of 2020, the city population is 6354.

Major Cities Nearby Johnsburg, IL

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