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
Other Information
Follow us on Twitter
Follow us on Facebook
Follow us on YouTube
LOT RSS Feed