Normals and Records
| Last Freeze Normals | ||
| Normal Last Spring 32° or Lower | Last Year (2021) | |
| Chicago (O'Hare) | April 21 | April 22 |
| Rockford | April 27 | April 22 |
Normals are based on 1991-2020 data.
| Last Freeze Records | ||
| Earliest Last Spring 32° or Lower | Latest Last Spring 32° or Lower | |
| Chicago | March 19, 1925 | May 25, 1992 |
| Rockford | April 7, 2017 | May 27, 1992 |
History of the Chicago and Rockford Weather Observation Sites
Illinois Normal Frost and Freeze Info | Indiana Normal Frost and Freeze Info
This Spring's Temperatures
Text Listing of Local Area Observed Low Temperatures
Maps of Midwest Recently Observed Low Temperatures
Other Information
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