Illinois hail data & season
Illinois has recorded 950 hail events since 2024, including 672 in the last 12 months, with hail up to 4″. Illinois's busiest hail month is April.
Data as of June 24, 2026 · source: NOAA SPC / Iowa Environmental Mesonet, analyzed by StormyLeads
672
Events (12 mo)
950
Events (all time)
4"
Biggest hail
6,651
Businesses tracked
Biggest Illinois hail storms
| Location | Hail size | Date |
|---|---|---|
| NORTONVILLE | 4″ | March 14, 2024 |
| EAGLE PARK | 3.75″ | March 14, 2024 |
| 3 N Humboldt | 3″ | June 17, 2026 |
| 1 SE Arthur | 3″ | June 17, 2026 |
| 3 N Cadwell | 3″ | June 17, 2026 |
| 2 W Dakota | 3″ | April 17, 2026 |
| ROBINSON | 3″ | May 16, 2025 |
| EYLAR | 3″ | May 15, 2025 |
| 3 N Charleston | 2.75″ | June 17, 2026 |
| 2 SW Humboldt | 2.75″ | June 17, 2026 |
When Illinois hail season peaks
Illinois hail events by month (all years in our dataset).
Hardest-hit Illinois areas
Illinois hail FAQ
When does hail season start in Illinois?
Illinois hail season runs broadly March through June. In StormyLeads' data the busiest month for Illinois is April. Across the US, about 80% of significant hail falls March–June, peaking in May; the northern Plains run slightly later into July.
How much hail does Illinois get?
StormyLeads has detected 950 hail events in Illinois since 2024, including 672 in the last 12 months. The largest reported hail reached 4 inches in diameter.
What was the biggest recent hail storm in Illinois?
The largest hail StormyLeads has recorded in Illinois was 4" near NORTONVILLE on March 14, 2024. The full top-10 by hail size is listed above.
Other high-hail states
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