Weather Forecast and Radar for Belleville, Illinois

Current & 7-day weather forecast, weather alerts, and weather radar for Belleville, Illinois.
All times shown in your local timezone

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Routes Running Nearby to Belleville, Illinois

  • The I-64 runs east-west north of Belleville, IL, coming from St. Louis, MO.

  • The I-255 runs north-south to the northwest of Belleville, IL.

Weather in Belleville, IL

In Belleville, the summers are hot and muggy; the winters are very cold, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 25°F to 89°F and is rarely below 9°F or above 96°F.

The hot season lasts for 3.8 months, from May 27 to September 19, with an average daily high temperature above 79°F. The hottest month of the year in Belleville is July, with an average high of 88°F and low of 69°F.

The cold season lasts for 3.0 months, from November 28 to February 28, with an average daily high temperature below 50°F. The coldest month of the year in Belleville is January, with an average low of 25°F and high of 41°F.

Belleville, IL is a Very High Risk area for tornados. According to records, the largest tornado in the Belleville area was an F4 in 1956 that caused 36 injuries and 6 deaths. *Tornado risk is calculated from the destruction path that has occured within 30 miles of the location.

Fast Facts About Belleville, IL

The city was incorporated in 1814.

As of 2020, the city population is 42,404.

Major Cities Nearby Belleville, IL

  • Chicago, Illinois (roughly 251 miles to the northeast)

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