Weather Forecast and Radar for Chicago, Illinois

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

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Routes Running Nearby to Chicago, Illinois

  • The I-55 runs north-south, ending in Chicago, IL.

  • The I-90 runs east-west through Chicago, IL.

  • The I-94 runs north-south through Chicago, IL.

Weather in Chicago, IL

In Chicago, the summers are warm, humid, and wet; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 22°F to 83°F and is rarely below 5°F or above 91°F.

The warm season lasts for 3.6 months, from June 3 to September 20, with an average daily high temperature above 73°F. The hottest month of the year in Chicago is July, with an average high of 82°F and low of 70°F.

The cold season lasts for 3.2 months, from December 2 to March 9, with an average daily high temperature below 43°F. The coldest month of the year in Chicago is January, with an average low of 22°F and high of 33°F.

A total of 87 historical tornado events that had recorded magnitude of 2 or above found in or near Chicago, IL.

Fast Facts About Chicago, IL

The city was incorporated in 1833 (as a town) and 1837 (as a city).

As of 2020, the population is 2,746,388 within the city and 9,618,502 in the metro area.

Major Cities Nearby Chicago, IL

  • Naperville, Illinois (roughly 30 miles to the southwest)
  • Aurora, Illinois (roughly 38 miles to the southwest)
  • Rockford, Illinois (roughly 78 miles to the northwest)

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