Hail in Washington County, Iowa

Hail in Washington County, Iowa: 101 recorded events between 1969 and 2026. The strongest on record measured 2.75. That places the county #1,429 nationally and #83 statewide for this hazard.

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

The busiest decade for hail in Washington County is the 2010s, when 37 of the county's 101 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 Washington County archive, hail makes up 27.2% of all recorded severe weather across 9 hazard types. Nationally the county sits at #1,429 for this hazard and #83 within Iowa, putting it in the 54.1 percentile of all U.S. counties.

Apr is the peak month for hail in Washington 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 175

How many hail events are on record in Washington County, Iowa?

101 hail events are recorded in Washington County between 1969 and 2026, causing 0 direct deaths.

What is the strongest hail recorded in Washington County?

The strongest hail on record in Washington County measured 2.75.

Where does the hail data for Washington 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.