Hail history for Mercer County, PA

Last hail in the countySep 2, 20260.75 in (penny)

Hail days, last 12 months2

Largest hail since 20062.75 in (baseball)May 28, 2019

Hail days since 200644

Days with hail 1 inch or larger30

Tornadoes in the county8

Damaging wind reports in the county399

115 hail reports in Mercer County since 2006 on 44 days. The largest stones measured 2.75 in (baseball) on May 28, 2019.

Cities in Mercer County

Recent hail in Mercer County

Date	Hail size	Where	Source
Sep 2, 2026	0.75 in penny	New Lebanon 1 hail report	NWS storm report (preliminary)
Apr 15, 2026	1.75 in golf ball	Orangeville, Maysville, Fairview 9 hail reports	NOAA Storm Events
May 2, 2025	1.25 in half dollar	Jamestown 1 hail report	NOAA Storm Events
Oct 6, 2024	1 in quarter	Cool Spg, Jackson Center, Mercer 3 hail reports	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 Mercer County by year

When hail season peaks in Mercer County

Damaging thunderstorm winds in Mercer County

399 reports of damaging thunderstorm wind in Mercer County since 2006, on 148 days. The strongest measured gust was 76 mph on Apr 1, 2023.

Date	Strongest gust	Where	Source
Sep 3, 2026	damage reported	Jamestown, Greenville, Greenville East 15 wind reports	NWS storm report (preliminary)
Aug 23, 2026	damage reported	Grove City, Barkeyville 2 wind reports	NWS storm report (preliminary)
Aug 22, 2026	damage reported	Hermitage, Stoneboro, Mercer 3 wind reports	NWS storm report (preliminary)
Jul 21, 2026	damage reported	Greenville East, Sandy Lake 2 wind reports	NWS storm report (preliminary)
Jul 18, 2026	damage reported	Jamestown 2 wind reports	NWS storm report (preliminary)
Jul 3, 2026	damage reported	Sharon, Grove City, Clark 4 wind reports	NWS storm report (preliminary)
Jun 20, 2026	58 mph, estimated	Grove City 1 wind report	NOAA Storm Events
Jun 14, 2026	58 mph, estimated	Clarks Mills 1 wind report	NOAA Storm Events
May 9, 2026	58 mph, estimated	West Middlesex Airport, Wheatland 2 wind reports	NOAA Storm Events
Apr 16, 2026	58 mph, estimated	Farrell, Henlein, Salem 6 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 Mercer 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).