HailHistory › Hail by county › Pennsylvania › Delaware County
Pennsylvania · county FIPS 42045
Hail history for Delaware County, PA
Delaware County has 62 recorded hail events in the NOAA Storm Events Database — 31 of them 1″ or larger. The largest on record: 1.75″ (golf ball) on June 24, 2010.
Mark size = measured hail diameter; slivers are events with no recorded size. Amber ≥2″, red ≥2.75″ (baseball class). Denser recent decades partly reflect better reporting, not only more storms.
When it hails in Delaware County
Recorded events by month, 1950–present. The amber bar marks Delaware County's peak: May.
Most recent recorded events
| Date | Size | Comparable to |
|---|---|---|
| 0.88″ | Nickel | |
| 0.75″ | Penny | |
| 1.25″ | Half dollar | |
| 1.0″ | Quarter | |
| 1.0″ | Quarter | |
| 1.0″ | Quarter | |
| 1.25″ | Half dollar | |
| 1.0″ | Quarter |
Looking for a specific storm? Use the did-it-hail date lookup for Delaware County.
From the storm reports
Narratives as filed with the NOAA Storm Events Database (public records; lightly trimmed for length).
· 0.88″ (nickel)
Nickel-sized hail was observed.
· 1.75″ (golf ball)
The same severe thunderstorm produced a swath of large hail (quarter to golf ball size) across eastern Delaware County from Haverford Township south through Yeadon Borough. The largest hail (golf ball size) was reported in Yeadon and ping pong ball size hail (1.5 inches in diameter) was reported in Drexel Hill in Upper Darby Township.
· 1.75″ (golf ball)
Severe thunderstorms dropped large hail across several municipalities in Delaware County. The largest reported hail was golf ball size in Media Borough. Quarter size hail was reported in Lansdowne Borough. In Clifton Heights Borough, penny size hail covered the ground. Dime to penny size hail were reported in both Boothwyn (Upper Chichester Township) and Concord Township.
Events by decade
| 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 1 | 3 | 6 | 12 | 17 | 20 |
The climb across decades is largely a reporting story: spotter networks, radar, and digital filing pulled far more storms into the record after the 1990s.
Questions about hail in Delaware County
Has it ever hailed in Delaware County?
Yes — 62 hail events have been recorded for Delaware County, PA in the NOAA Storm Events Database since 1957, including 31 of 1″ (quarter size) or larger.
When did it last hail in Delaware County?
The most recent recorded hail event for Delaware County, PA is May 3, 2025, with 0.88″ (nickel) hail. The database is currently updated through April 2026, so a storm from the last few weeks may not appear yet. To check a specific day, use the did-it-hail date lookup.
What is the largest hail ever recorded in Delaware County?
1.75″ (golf ball), recorded on June 24, 2010. Hail that size meets or exceeds the National Weather Service severe threshold. See how big that really is on the actual-size hail chart.
Does a recorded hail event mean my roof was damaged?
No. This page reports storm records, not damage. Hail size and damage vary block by block within a county, and only an inspection can establish what happened to a specific roof. If you suspect damage, talk to your insurer or a licensed roofer — they can pull the same NOAA records for your claim.
More Pennsylvania hail history
- Allegheny County 445
- Westmoreland County 291
- Erie County 204
- Butler County 201
- Lancaster County 192
- Crawford County 185
Source: NOAA/NCEI Storm Events Database, public domain, updated monthly by NCEI — this site's copy runs through April 2026. HailHistory reports records; it does not give insurance advice or assess damage.