Hail in Winnebago County, Wisconsin

Hail in Winnebago County, Wisconsin: 141 recorded events between 1964 and 2025. The strongest on record measured 4.25. That places the county #995 nationally and #23 statewide for this hazard.

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

The busiest decade for hail in Winnebago County is the 2000s, when 53 of the county's 141 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 Winnebago County archive, hail makes up 34.3% of all recorded severe weather across 10 hazard types. Nationally the county sits at #995 for this hazard and #23 within Wisconsin, putting it in the 67.9 percentile of all U.S. counties.

Jun is the peak month for hail in Winnebago County with 31 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 190

How many hail events are on record in Winnebago County, Wisconsin?

141 hail events are recorded in Winnebago County between 1964 and 2025, causing 0 direct deaths.

What is the strongest hail recorded in Winnebago County?

The strongest hail on record in Winnebago County measured 4.25.

Where does the hail data for Winnebago 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.