Hail fell in Montgomery County on 65 days from 1996 through 2025, and 33 of them were in June or July

Fri, 09 Oct 2026 08:38:41 -0400

NOAA’s Storm Events Database lists hail in Montgomery County on 65 days from 1996 through 2025, and 33 of those days were in June or July. May through August held 55 of the 65. The database is kept by NOAA’s National Centers for Environmental Information (NCEI), which describes it as the National Weather Service’s record of weather strong enough to cause deaths, injuries, significant property damage or disruption to commerce. On October 9, 2026 its data ran through June 2026. The first six months of 2026 added 21 thunderstorm wind reports in the county, spread over 4 days, and no hail reports.

The counts below are this site’s tally of NCEI’s yearly files, filtered to Montgomery County. A hail day or a wind day is a date with at least one report of that kind somewhere in the county, which runs from Bala Cynwyd and Cheltenham to Pottstown.

Hail in Montgomery County fell mostly from May through August

Days with at least one hail report in Montgomery County, by month, 1996 to 2025

Counted by Conshy Roofers from the NCEI Storm Events Database. A day counts once however many reports it has. Source: ncei.noaa.gov

Hail and wind by month

Thunderstorm wind follows the same calendar. The database lists 516 thunderstorm wind reports in the county on 207 days from 1996 through 2025, and 102 of those days were in June or July. No hail was reported in September, December, January or February in those 30 years. Wind reports came in every month, including 8 days each in September and November.

Hail and thunderstorm wind in Montgomery County by month, 1996 to 2025
month	Hail days	Thunderstorm wind days	Hail reports	Thunderstorm wind reports
January	0	1	0	2
February	0	3	0	8
March	3	7	4	15
April	5	14	5	29
May	10	24	18	46
June	17	50	25	142
July	16	52	43	124
August	12	34	19	86
September	0	8	0	14
October	1	5	1	12
November	1	8	1	37
December	0	1	0	1

Source: ncei.noaa.gov

Hail and wind by year

The busiest year for hail was 2009, with 7 hail days. Wind days peaked at 17 in 2021 and 15 in 2019. The number of wind reports rose faster than the number of days: 61 reports in 2019, 86 in 2020 and 63 in 2021, against no more than 20 a year before 2019. More reports for each storm can come from more people reporting damage as well as from stronger storms, so the count of days is the steadier measure.

Wind days peaked in 2019 and 2021, hail days in 2009

Days with at least one hail or thunderstorm wind report in Montgomery County, by year, 1996 to 2025. Same scale on every panel.

Hail days

Thunderstorm wind days

Counted by Conshy Roofers from the NCEI Storm Events Database. Source: ncei.noaa.gov

Hail and thunderstorm wind in Montgomery County by year, 1996 to 2025
year	Hail days	Thunderstorm wind days	Hail reports	Thunderstorm wind reports
1996	4	7	5	7
1997	1	3	1	4
1998	3	5	3	6
1999	1	2	1	3
2000	1	2	1	3
2001	2	2	2	2
2002	2	11	3	12
2003	1	6	1	6
2004	1	5	1	6
2005	0	6	0	8
2006	4	9	4	13
2007	2	6	4	6
2008	3	8	5	11
2009	7	7	12	9
2010	1	5	2	11
2011	2	6	4	13
2012	4	6	4	11
2013	0	5	0	8
2014	1	7	1	15
2015	2	8	2	11
2016	1	5	3	19
2017	2	8	3	18
2018	3	5	3	20
2019	3	15	9	61
2020	1	12	10	86
2021	4	17	16	63
2022	3	4	3	8
2023	3	10	4	33
2024	1	7	6	14
2025	2	8	3	29

Source: ncei.noaa.gov

How big the hail was

Of the 116 hail reports from 1996 through 2025, 59 were 1 inch across or larger. One inch, the size of a quarter, is where the National Weather Service considers a thunderstorm severe. The Weather Service raised that threshold from 3/4 inch on January 5, 2010, and the American Meteorological Society reported at the time that the agency cited research showing significant damage does not occur from hail smaller than an inch.

The largest hail in the county’s record since 1996 was 1.75 inches, the size of a golf ball, in 8 reports. The most recent was a trained spotter’s report from King of Prussia on June 6, 2023.

Hail reports in Montgomery County by size, 1996 to 2025. Size names from the National Weather Service hail chart.
Hail size	Diameter (inches)	Reports 1996 to 2025
3/4 inch (penny)	0.75	31
0.8 inch	0.80	1
7/8 inch (nickel)	0.88	25
1 inch (quarter)	1.00	45
1 1/4 inches (half dollar)	1.25	4
1 1/2 inches (walnut)	1.50	2
1 3/4 inches (golf ball)	1.75	8

Source: weather.gov

Near Conshohocken

The database names each report by the nearest place in the Weather Service’s location list. Eleven hail reports from 1996 through 2025 name a place in or next to the townships around Conshohocken. Conshohocken itself appears twice in the wind reports, with gusts estimated at 50 knots, about 58 mph, on July 8, 2021 and July 8, 2025.

Hail reports naming a place near Conshohocken, 1996 to 2025
Date	Place named in the report	Hail size (inches)	Reported by
2002-06-19	Bala Cynwyd	1.75	Broadcast media
2002-06-19	Plymouth Valley	0.75	Law enforcement
2006-04-24	Bridgeport	0.75	General public
2006-08-25	King of Prussia	1.25	Emergency manager
2007-06-11	Plymouth Meeting	0.88	Public
2009-04-06	Bala Cynwyd	0.88	Public
2018-08-11	King of Prussia	0.75	Social media
2020-07-06	Plymouth Valley	1.00	Public
2021-07-21	Marble Hall	1.00	Trained spotter
2021-07-21	Plymouth Valley	1.00	Public
2023-06-06	King of Prussia	1.75	Trained spotter

Source: ncei.noaa.gov

The first half of 2026

The 21 wind reports from January through June 2026 fell on March 16, May 20, June 6 and June 22. Most named places in the upper end of the county, around Pottstown, Limerick and Collegeville. The May 20 reports carry the highest estimate of the year so far, 55 knots, about 63 mph. On June 22 the reports moved closer: uprooted trees and snapped branches at Betzwood, a tree down on westbound I-76 near Miquon, and trees down around Tookany Creek Park in Cheltenham.

From 1996 through 2025 the county averaged about 1.2 hail days in the first half of the year, and 10 of those 30 years had none.

Thunderstorm wind reports in Montgomery County, January to June 2026. Gusts are Weather Service estimates, converted from knots.
Date	Reports	Places named in the reports	Estimated gust (mph)
2026-03-16	10	Collegeville; Creamery; Eagleville; Green Lane; Layfield; Limerick Center; Mainland; Pottstown; Zeiglersville	58
2026-05-20	6	Colmar; Layfield; Limerick Center; Pennsburg; Pottstown	63
2026-06-06	2	Fagleysville; Pottstown	58
2026-06-22	3	Betzwood; Cheltenham; Miquon	58

Source: ncei.noaa.gov

Hail and thunderstorm wind in Montgomery County, January to June of each year, 1996 to 2026
year	Hail days January to June	Thunderstorm wind days January to June	Thunderstorm wind reports January to June
1996	3	4	4
1997	1	2	3
1998	2	4	5
1999	1	0	0
2000	1	1	2
2001	1	1	1
2002	2	9	10
2003	0	0	0
2004	1	2	2
2005	0	3	4
2006	1	1	2
2007	2	6	6
2008	0	5	5
2009	5	3	3
2010	1	2	2
2011	1	1	2
2012	2	3	4
2013	0	2	3
2014	0	2	7
2015	2	6	8
2016	0	2	13
2017	0	3	10
2018	0	3	9
2019	3	8	38
2020	0	4	35
2021	1	7	33
2022	2	3	4
2023	2	5	11
2024	0	3	4
2025	1	4	12
2026	0	4	21

Source: ncei.noaa.gov

Tornadoes

The database lists 5 tornadoes in the county from 1996 through 2025. The strongest, an EF2 on September 1, 2021, ran 8.28 miles from near Flourtown through Fort Washington and Upper Dublin to NAS Willow Grove, the end point named in the record. The Enhanced Fujita scale rates a tornado by its damage, and NCEI’s format notes put EF2 winds at 113 to 157 mph. The Weather Service narrative describes homes near Stuart Creek in Upper Dublin with partial to near total loss of their roofing, and the record carries a property damage estimate of $5 million.

Tornadoes in Montgomery County, 1996 to 2025
Date	Rating	Path begins near	Path ends near	Path length (miles)
2003-09-23	F1	Narberth	Narberth	0.8
2020-08-04	EF0	Hartranft	Worcester	3.14
2020-11-30	EF0	Montgomeryville airport	Montgomeryville airport	0.87
2021-08-18	EF1	Elroy	Souderton	2.03
2021-09-01	EF2	Flourtown	NAS Willow Grove	8.28

Source: ncei.noaa.gov

What to do with the record after a storm

If a roofer knocks after a storm and says hail hit your street, ask for the date and the hail size. Then search the Storm Events Database by state, county and event type for that date, and compare the size and place in the record with what the roofer told you. The record cannot tell you whether your roof was damaged, so have the roof looked at before you sign anything. The roof inspection checklist covers what to check from the ground, and the guide to checking a roofer’s registration covers the Attorney General’s lookup.

A storm from this summer or fall will not be in the database yet, since its data stops at June 2026. If you file an insurance claim, the date of a county report can sit alongside your own photos, as the guide to storm damage claims explains. Whether a policy covers the damage is a question for your insurer or agent. The guide to how weather wears a roof puts hail next to freeze-thaw, rain and wind.

Caveats

These are counts of reports, so they depend on someone seeing the hail or the damage and telling the Weather Service. Spotters, police, broadcasters, social media posts and members of the public all appear as sources. A rise in reports can come from more reporting as well as from more storms.

Most wind speeds in the record are estimates. Of the 516 wind reports from 1996 through 2025, 271 carry an estimated gust of exactly 50 knots, about 58 mph, the Weather Service’s wind threshold for a severe storm. The database records wind in knots, and this article converts them to mph.

A county total says little about any one street. A hail report marks one place at one time, and hail can fall in a narrow band. NCEI reissues its yearly files, and the 2026 file used here is dated September 18, 2026, so figures for 2026 can change.

Hail | Conshy Roofers

Hail fell in Montgomery County on 65 days from 1996 through 2025, and 33 of them were in June or July

Hail and wind by month

Hail and wind by year

How big the hail was

Near Conshohocken

The first half of 2026

Tornadoes

What to do with the record after a storm

Caveats