Hail history · Illinois
Knox County, Illinois hail history
15 days with hail reports since 2010, most recently Apr 17, 2026. Largest hail: 1.75".
Hail days since 2010154 in the last 5 years
Largest hail1.75"golf ball · Mar 20, 2017
Damaging wind reports72last Jun 17, 2026
By year
| Year | Hail days | Hail reports | Largest hail | Wind reports | Strongest gust |
|---|---|---|---|---|---|
| 2026 (preliminary) | 1 | 1 | 1.75" | 8 | – |
| 2025 | 0 | 0 | – | 4 | 70 mph |
| 2024 | 2 | 2 | 1.75" | 9 | 100 mph |
| 2023 | 1 | 1 | 1.00" | 11 | 70 mph |
| 2022 | 0 | 0 | – | 4 | 60 mph |
| 2021 | 0 | 0 | – | 4 | 81 mph |
| 2020 | 3 | 3 | 1.50" | 9 | 70 mph |
| 2019 | 1 | 1 | 1.75" | 5 | 60 mph |
| 2018 | 2 | 3 | 1.25" | 3 | 60 mph |
| 2017 | 5 | 10 | 1.75" | 7 | 70 mph |
| 2016 | 0 | 0 | – | 8 | 90 mph |
| 2015 | 0 | 0 | – | 0 | – |
| 2014 | 0 | 0 | – | 0 | – |
| 2013 | 0 | 0 | – | 0 | – |
| 2012 | 0 | 0 | – | 0 | – |
| 2011 | 0 | 0 | – | 0 | – |
| 2010 | 0 | 0 | – | 0 | – |
Largest hail reports
| Size | About the size of a | Date |
|---|---|---|
| 1.75" | golf ball | Mar 20, 2017 |
| 1.75" | golf ball | Sep 27, 2019 |
| 1.75" | golf ball | Jun 25, 2024 |
| 1.75" | golf ball | Apr 17, 2026 |
| 1.50" | ping pong ball | Mar 20, 2017 |
| 1.50" | ping pong ball | Apr 7, 2020 |
| 1.25" | half dollar | Feb 28, 2017 |
| 1.25" | half dollar | Mar 20, 2017 |
| 1.25" | half dollar | May 13, 2018 |
| 1.00" | quarter | Feb 28, 2017 |
Check a specific address
County totals hide big differences between neighborhoods. See every report within 1 to 10 miles of a home.
Source: NOAA Storm Prediction Center storm reports (final Storm Data through Dec 28, 2025; preliminary reports through Oct 9, 2026). Hail 1 inch or larger and damaging wind (58 mph or more, or reported damage). Counts are reports, not damage claims; many storms go unreported. Dates are CST. About the data