Hail in Knox County, Illinois

Hail in Knox County, Illinois: 114 recorded events between 1967 and 2024. The strongest on record measured 4.5. That places the county #1,265 nationally and #40 statewide for this hazard.

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for hail in Knox County is the 2010s, when 50 of the county's 114 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the Knox County archive, hail makes up 29.0% of all recorded severe weather across 6 hazard types. Nationally the county sits at #1,265 for this hazard and #40 within Illinois, putting it in the 59.2 percentile of all U.S. counties.

May is the peak month for hail in Knox County with 29 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

• Thunderstorm Wind 205

How many hail events are on record in Knox County, Illinois?

114 hail events are recorded in Knox County between 1967 and 2024, causing 0 direct deaths.

What is the strongest hail recorded in Knox County?

The strongest hail on record in Knox County measured 4.5.

Where does the hail data for Knox County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.