Hail in Pennsylvania — where it hits, county by county
Hail is a fact of life on Pennsylvania ground — 419 National Weather Service hail reports in the last 5 years, led by Allegheny County, peaking around April. The table below ranks the counties; the interactive national map shows exactly where, year by year. Checking a specific address? The map’s search box pulls every dated report within 25 miles.
Open the interactive map on Pennsylvania →Top hail counties in Pennsylvania (2022–2026)
| County | Reports | Avg/yr | Peak month | % damaging (≥1.5″) |
|---|---|---|---|---|
| Allegheny | 81 | 16.2 | Apr | 22% |
| Butler | 46 | 9.2 | Apr | 13% |
| Washington | 40 | 8.0 | Aug | 12% |
| Westmoreland | 37 | 7.4 | Mar | 11% |
| Montgomery | 31 | 6.2 | Jun | 3% |
| Chester | 31 | 6.2 | Jun | 0% |
| Centre | 31 | 6.2 | Mar | 0% |
| Beaver | 29 | 5.8 | Mar | 0% |
| Lawrence | 27 | 5.4 | Apr | 30% |
| Lehigh | 24 | 4.8 | Apr | 0% |
| Indiana | 21 | 4.2 | May | 43% |
| Berks | 21 | 4.2 | Sep | 0% |
Pennsylvania hail — the questions people ask
Where does it hail the most in Pennsylvania?
By reported hail over the last 5 years, the most active counties in Pennsylvania are Allegheny, Butler, Washington. Reports track population and spotter coverage as well as storms, so rural corridors can be under-counted; the persistent leaders on this table are real hail geography.
When is hail season in Pennsylvania?
Reported hail in Pennsylvania peaks around April, with most activity in the spring-through-midsummer window. Any single year can break the pattern.
How much of Pennsylvania's hail is damaging?
On this page, damaging means reported stones of 1.5″ or larger — the size that reliably dents roofs and vehicles and strips crops. The per-county damaging share is in the table; statewide, hail of any size totaled 419 reports over 5 years.