Hail in St. Clair County, Illinois
Radar recorded hail of 1 inch or larger in St. Clair County on 41 days since October 2020. That is more than 75% of US counties. It ranks 15 of 102 in Illinois.
The largest radar estimate was 2.9 inches on July 17, 2023. The most recent 1-inch day was July 10, 2026. Radar estimates and ground reports often differ, so see how they compare.
See the county center on the map
Days of 1-inch hail by year
| Year | Days |
|---|---|
| 2020 (from October) | 0 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 11 |
| 2024 | 6 |
| 2025 | 8 |
| 2026 | 7 |
Largest hail days
| Storm day | Radar estimate |
|---|---|
| July 17, 2023 | 2.9 in |
| May 26, 2024 | 2.25 in |
| July 5, 2023 | 2.05 in |
| March 30, 2025 | 2.05 in |
| May 14, 2023 | 1.9 in |
| June 30, 2023 | 1.9 in |
Ground reports
Within this area, storm spotters and weather offices logged 36 hail reports since October 2020, and 55 tornadoes started here since 1950.
Figures cover a circle with the same land area as the county, centered on it, so edges are approximate.
Most hail days in Illinois
- McLean County: 69 days
- Sangamon County: 54 days
- Madison County: 50 days
- Macon County: 49 days
- Morgan County: 49 days
- Macoupin County: 48 days