Weather Forecast and Radar for Cahokia, Illinois

Weather in Cahokia, IL

Cahokia, Illinois is in the midwestern United States, located in St. Clair County.

In the winter, the average temperature is around 34°F, with temperatures ranging from a low of around 18°F in January to a high of around 49°F in March. The area typically experiences about 18 inches of snow per year.

Spring in Cahokia brings an average temperature of around 56°F, with temperatures ranging from a low of around 41°F in April to a high of around 71°F in June.

During the summer months, Cahokia’s average temperature is around 79°F, with temperatures ranging from a low of around 64°F in July to a high of around 94°F in August. The area typically experiences about 43 days of 90°F or higher temperatures each summer.

Fall in Cahokia brings an average temperature of around 56°F, with temperatures ranging from a low of around 41°F in October to a high of around 71°F in December.

Overall, Cahokia has a mild climate year-round, with temperatures rarely falling below freezing or rising above 100°F.

Fast Facts About Cahokia, IL

As of 2020, the city population is 14035.

Major Cities Nearby Cahokia, IL

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