NOAA Storm Events, 2016-2025
Hail in Illinois, county by county
2,878 reported hail events across 102 countys, largest 4.50 in.
Reports
2,878
2016-2025
Counties affected
102
of all Illinois counties with hail
Largest stone
4.50 in
in Adams County
Reports ≥ 2 in
196
6.8% of all reports
Reports are up 20% comparing the most recent half of the record with the earlier half. Report counts track where people look as much as where hail falls.
Counties ranked by hail reports
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| # | County | Reports | Largest | ≥ 2 in | ≥ 4 in | Most recent |
|---|---|---|---|---|---|---|
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Illinois hail summary
The counties with the most reported hail in Illinois are Cook (164 reports), Sangamon (121 reports), Peoria (96 reports). The largest stones on record in this period were reported in Adams (4.50 in), Fulton (4.00 in), Morgan (4.00 in).
What this does not tell you
A county is a large area and hail swaths are narrow, so a county count cannot tell you whether a particular property was hit. The methodology page sets out what this record can and cannot support.
Frequently asked questions
Which Illinois county gets the most hail?
By reported events in this record, Cook County leads with 164 reports, ahead of Sangamon and Peoria.
What is the largest hailstone recorded in Illinois?
The largest reported stone in this period is 4.50 in, in Adams County. Hailstone records are reported measurements, and estimates from photographs are common.
How often does Illinois get damaging hail?
6.8% of the 2,878 reported events in this period reached 2 inches or more, the size at which shingle and vehicle damage becomes likely.