Clinton County weather alerts
There are no active weather alerts for Clinton County, IL right now.
Since 2016 the National Weather Service has issued about 751 alerts that included Clinton County, roughly 75 a year. The most common is the severe thunderstorm warning (143 from 2016 to 2025). The last tornado warning was issued on June 21, 2026. 27 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Clinton County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Fayette County, Marion County, St. Clair County, Bond County.
Clinton County alert history
Alert events that included Clinton County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 143 | 15 | August 22, 2026 |
| Severe Thunderstorm Watch | 71 | 3 | June 1, 2026 |
| Dense Fog Advisory | 70 | 2 | March 6, 2026 |
| Winter Weather Advisory | 51 | 0 | December 1, 2025 |
| Wind Advisory | 48 | 3 | June 17, 2026 |
| Flood Watch | 46 | 5 | June 25, 2026 |
| Tornado Watch | 41 | 5 | June 21, 2026 |
| Flood Warning | 39 | 2 | May 7, 2026 |
| Heat Advisory | 35 | 8 | September 15, 2026 |
| Flood Advisory | 34 | 4 | June 27, 2026 |
| Freeze Warning | 30 | 2 | November 7, 2026 |
| Flash Flood Warning | 29 | 4 | June 8, 2026 |
| Tornado Warning | 24 | 6 | June 21, 2026 |
| Frost Advisory | 18 | 1 | October 18, 2026 |
| Cold Weather Advisory | 11 | 5 | January 28, 2026 |
| Winter Storm Warning | 10 | 1 | January 24, 2026 |
| Winter Storm Watch | 10 | 1 | January 24, 2026 |
| Extreme Heat Warning | 9 | 4 | September 3, 2026 |
| Freeze Watch | 9 | 0 | November 2, 2025 |
| Red Flag Warning | 7 | 1 | March 29, 2026 |
| Extreme Heat Watch | 5 | 3 | August 31, 2026 |
| High Wind Warning | 3 | 0 | March 5, 2025 |
| Extreme Cold Warning | 3 | 1 | January 26, 2026 |
| Extreme Cold Watch | 2 | 0 | December 22, 2022 |
| Ice Storm Warning | 1 | 0 | January 13, 2017 |
| High Wind Watch | 1 | 0 | March 14, 2019 |
| Fire Weather Watch | 1 | 0 | October 17, 2020 |
Tornado history in Clinton County
27 tornadoes have been recorded in Clinton County since 1950, killing 3 people and injuring 8. That ranks 55 of 102 counties in Illinois. The most recent was on March 14, 2025 (rated EF2).
Strongest tornadoes in Clinton County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| December 2, 1982 | F3 | Clinton County | 10.5 mi | 100 yd | 2 | 0 |
| April 5, 1958 | F3 | St. Clair County | 60.5 mi | 100 yd | 1 | 8 |
| April 22, 2011 | EF2 | Madison County | 18.2 mi | 700 yd | 0 | 0 |
| March 8, 1964 | F2 | Clinton County | 13.1 mi | 40 yd | 0 | 0 |
| March 14, 2025 | EF2 | St. Clair County | 11 mi | 700 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| March 14, 2025 | EF2 | St. Clair County | 11 mi | 700 yd | 0 | 0 |
| May 26, 2024 | EF1 | Clinton County | 18.5 mi | 325 yd | 0 | 0 |
| May 26, 2024 | EF0 | St. Clair County | 10.5 mi | 500 yd | 0 | 0 |
| May 19, 2022 | EF1 | Clinton County | 16.7 mi | 250 yd | 0 | 0 |
| May 19, 2022 | EF0 | Clinton County | 1.7 mi | 50 yd | 0 | 0 |
About Clinton County
- Population: 37,087 (2024 estimate)
- State: Illinois
- NOAA Weather Radio SAME code: 017027 (how to use it)