The most recent reported hail day was 2025-07-08, 388 days ago. Montgomery County has recorded hail in nearly every year on the archive. The largest stone on record here is 1.75 inches, a golf ball and 1.8 times the National Weather Service's 1 inch severe criterion, reported on 2023-06-06 near King of Prussia.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Pennsylvania. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2025-07-08, around Pottstown. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Montgomery County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 23 separate hail days here since 2010 -- 1.4 a year over 17 years of record. Those days carry 45 separate reports between them, two or three on a typical one. 2 of those 17 years produced none at all. The busiest single year was 2023, with 4 hail days. The last five years track the long-run rate, with 8 days since 2022.
No stone of 2 inches or more has ever been reported in Montgomery County: all 23 hail days on record topped out below that. Golf-ball size is rarer still: 1.75 inches or more on 1 of the 23 days.
Across the whole of Pennsylvania, see the Pennsylvania hail map and history.
Reports cluster nearest Pottstown -- 7 of the county's 23 hail days -- then Phoenixville (2), Eagleville (2), Flourtown (2) and Green Lane (2). Beyond those, NOAA names Plymouth Meeting and Plymouth Twp on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Pottstown | 6 | 1.50″ |
| Eagleville | 2 | 1.00″ |
| Green Lane | 2 | 1.00″ |
| Plymouth Twp | 2 | 1.00″ |
| King of Prussia | 1 | 1.75″ |
The season runs May through August: 19 of the 23 hail days on record fall in those 4 months (83%). July is the single busiest month, with 8 of them (35%). That peak sits inside the window rather than at either end. Hail has also been reported in March, September and November, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| March | 1 |
| May | 6 |
| June | 3 |
| July | 8 |
| August | 2 |
| September | 2 |
| November | 1 |
That day put 1 report on the map, the biggest 1 inch near Pottstown. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-07-08 | 1.00″ | 1 |
| 2025-05-03 | 1.00″ | 1 |
| 2024-08-18 | 1.00″ | 1 |
| 2023-09-09 | 1.00″ | 1 |
| 2023-07-25 | 1.00″ | 1 |
| 2023-06-16 | 1.00″ | 1 |
| 2023-06-06 | 1.75″ | 1 |
| 2022-05-16 | 1.00″ | 1 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 1.75 inches, which is the red band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Chester County (19 hail days), Lehigh County (13) and Berks County (24). Montgomery County sits in between.
Chester County · Lehigh County · Berks County
Back to the Pennsylvania hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Montgomery County, Pennsylvania only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.