Heat Wave Persists Over the Central U.S.; Significant Flooding Expected in the Northern Mid-Atlantic Tuesday

Dangerous and extreme heat will remain across portions of the Central U.S. this week, persisting across the Mid to Lower Mississippi Valleys, Gulf Coast, Southern Plains and portions of Texas. A heat wave over the Southwest will intensify late this week. Severe thunderstorms and flash flooding will spread from the Great Lakes/Ohio Valley to the Mid-Atlantic and Northeast the next few days. Read More >

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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Heat Wave Persists Over the Central U.S.; Significant Flooding Expected in the Northern Mid-Atlantic Tuesday

Normal Date of Final Spring Freeze