Hail History

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Hail history for Washington County, IA

Last hail in the countyAug 7, 20261 in (quarter)
Hail days, last 12 months5
Largest hail since 20062.5 in (tennis ball)Apr 2, 2026
Hail days since 200651
Days with hail 1 inch or larger31
Tornadoes in the county15
Damaging wind reports in the county116

80 hail reports in Washington County since 2006 on 51 days. The largest stones measured 2.5 in (tennis ball) on Apr 2, 2026.

Cities in Washington County

Recent hail in Washington County

DateHail sizeWhereSource
Aug 7, 20261.75 in
golf ball		Brighton, Pleasant Plain
3 hail reports		NWS storm report (preliminary)
Apr 15, 20261 in
quarter		Riverside
1 hail report		NOAA Storm Events
Apr 14, 20262 in
hen egg		Noble, Wellman, Lake Darling State Pk
4 hail reports		NOAA Storm Events
Apr 2, 20262.5 in
tennis ball		Kalona
2 hail reports		NOAA Storm Events
Mar 31, 20261.75 in
golf ball		Washington
1 hail report		NOAA Storm Events
Oct 24, 20240.75 in
penny		Washington Airport
1 hail report		NOAA Storm Events

One row per day: the largest hail reported in the county that day, the places and the number of reports.

Hail days in Washington County by year

30620720820910311312313714315166172181912042112222322425526

When hail season peaks in Washington County

Jan1Feb4Mar13Apr10May12Jun5Jul4Aug1Sep1OctNovDec

Damaging thunderstorm winds in Washington County

116 reports of damaging thunderstorm wind in Washington County since 2006, on 58 days. The strongest measured gust was 86 mph on May 16, 2019.

DateStrongest gustWhereSource
Aug 7, 202674 mph, measuredBrighton, Rubio
3 wind reports		NWS storm report (preliminary)
Jul 20, 2026damage reportedRubio
1 wind report		NWS storm report (preliminary)
Jun 11, 202660 mph, estimatedWashington
1 wind report		NOAA Storm Events
Apr 23, 202681 mph, estimatedKalona Airport, Brighton, Kalona
3 wind reports		NOAA Storm Events
Apr 17, 202669 mph, measuredWashington Airport, Richmond, Washington
4 wind reports		NOAA Storm Events
Apr 15, 202658 mph, estimatedAinsworth
1 wind report		NOAA Storm Events
Jul 11, 202575 mph, estimatedBrighton
1 wind report		NOAA Storm Events
Mar 19, 202560 mph, estimatedCrawfordsville
1 wind report		NOAA Storm Events
Mar 14, 202578 mph, measuredWashington, Brighton, Noble
7 wind reports		NOAA Storm Events
Jul 15, 202475 mph, estimatedHaskins, Brighton
2 wind reports		NOAA Storm Events

Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.

Filing a roof or car hail claim?

Insurers ask for the date of loss. The dates on this page are when hail was reported near Washington County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.

Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).