Hail in Cass County, Illinois

Hail in Cass County, Illinois: 56 recorded events between 1966 and 2026. The strongest on record measured 2.75. That places the county #2,108 nationally and #81 statewide for this hazard.

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

The busiest decade for hail in Cass County is the 2010s, when 21 of the county's 56 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 Cass County archive, hail makes up 26.9% of all recorded severe weather across 5 hazard types. Nationally the county sits at #2,108 for this hazard and #81 within Illinois, putting it in the 31.9 percentile of all U.S. counties.

May is the peak month for hail in Cass County with 16 recorded events, while Dec 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 105

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

56 hail events are recorded in Cass County between 1966 and 2026, causing 0 direct deaths.

What is the strongest hail recorded in Cass County?

The strongest hail on record in Cass County measured 2.75.

Where does the hail data for Cass 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.