Weather Forecast and Radar for Prospect Heights, Illinois

Weather in Prospect Heights, IL

Prospect Heights, Illinois, United States, experiences all four seasons. The mild temperate climate makes for warm summers and cold, snowy winters.

In the spring, temperatures range from the mid-30s to the mid-60s. April sees the most rain, with an average of 4.2 inches. The springtime brings blooming flowers and green grass.

In the summer, temperatures range from the mid-60s to the mid-80s. July is the hottest month with an average temperature of 77°F. The summer can be humid and sticky, and thunderstorms and tornadoes are common.

In the fall, temperatures range from the mid-40s to the mid-70s. October is the wettest month, with an average of 3.6 inches of rain. The fall is mild and pleasant, with colorful leaves and cool nights.

In the winter, temperatures range from the low-teens to the low-40s. January is the coldest month, with an average temperature of 24°F. The winter brings snow and ice, and can be quite harsh.

Fast Facts About Prospect Heights, IL

As of 2020, the city population is 15986.

Major Cities Nearby Prospect Heights, IL

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