Weather Forecast and Radar for Naperville, Illinois

Weather in Naperville, IL

In Naperville, Illinois, United States, the weather is generally mild year-round. In the winter, the average temperature is in the mid-30s Fahrenheit (around 0°C). During the winter months, snow is common, with temperatures occasionally dipping into the single digits.

In the spring, temperatures begin to warm, with the average temperature rising to the mid-50s (around 12°C). Rain is also common during this time of year, with thunderstorms occurring occasionally.

The summer months in Naperville bring hot and humid weather. Average summer temperatures range from the mid-70s to the mid-80s Fahrenheit (around 24°C to 30°C). July and August are the hottest months of the year, with temperatures often reaching the low 90s (around 33°C).

When autumn arrives, the temperatures begin to cool down to the mid-50s Fahrenheit (around 12°C). Rain is still common and the leaves turn vibrant colors in preparation for winter.

Overall, the weather in Naperville is generally mild, with hot and cold temperatures both occurring during different times of the year.

Fast Facts About Naperville, IL

As of 2020, the city population is 147734.

Major Cities Nearby Naperville, IL

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