A Pacific storm system will track through the Northwest U.S. today then across the Northern Plains, Upper Midwest and Great Lakes Thursday into Friday. Areas of moderate to heavy snow and gusty to high winds are expected. In the eastern U.S., a storm system will continue tracking across the region today with widespread showers and thunderstorms. A wintry mix will be possible in the Northeast U.S. Read More >
Chicago, IL
Weather Forecast Office
Normals and Records
First Freeze Normals | ||
Normal First Autumn 32° or Lower | First Freeze Date Last Year (2021) | |
Chicago (O'Hare) | October 19 | November 2 |
Rockford | October 13 | October 23 |
Normals are based on 1991-2020 data.
First Freeze Records | ||
Earliest First Autumn 32° or Lower | Latest First Autumn 32° or Lower | |
Chicago | September 22, 1995 (32°) | November 24, 1931 (30°) |
Rockford | September 13, 1975 (32°) | November 11, 2016 (32°) |
History of the Chicago and Rockford Weather Observation Sites.
Illinois Normal and Record First Freezes | Indiana Normal and Record First Freezes
This Autumn's Temperatures
Text Listing of Local Area Observed Low Temperatures
Maps of Midwest Recently Observed Low Temperatures
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Chicago, IL
333 West University Drive
Romeoville, IL 60446
815-834-1435 8am-8pm
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