Hail History

Hail history for Irwin, Pennsylvania

NOAA hail reports in and within about 5 km (3 miles) of Irwin since 2009, with preliminary reports to November 3, 2026.

Readout · Irwin

Last hail
Jul 26, 2012
1.00 in, quarter size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
1.75 in
golf ball · Jul 4, 2012

15 reports on 6 days since 2009 · #42 of 108 Pennsylvania places

Hail map · Irwin

Irwin East McKeesport McKeesport Greensburg Murrysville New Stanton West Mifflin Penn Hills Mount Pleasant 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
15 most recent reports with a location; Westmoreland County is shaded. Open street map

For homeowners

Roof damage after hail? Get a free inspection

Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Irwin is from July 26, 2012. A local roofer can check and document it at no cost.

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What the record says about Irwin

The latest hail report in and around Irwin is from July 26, 2012, 1.00 in (quarter size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Irwin logged 15 reports on 6 hail days, about 0.8 reports a year. That is 67% more than the median Pennsylvania town on this site (0.5 a year) and ranks #42 of 108 Pennsylvania cities and towns on this site for all-time reports. Irwin accounts for 5% of the 294 reports filed in Westmoreland County.

0% of reports with a size were 2 inches (hen egg) or larger, against 0% for the median Pennsylvania town on this site. The largest hail on record here is 1.75 in (golf ball) on July 4, 2012 near 0.53 E Circleville.

Reports were down 100% in 2016–2025 (0) compared with 2006–2015 (15). The busiest year was 2012, with 11 reports on 4 days. Hail here peaks in July (47% of reports); 13% fall between April and June.

Reports a year 2006–2025 average

  • Irwin 0.8
  • Westmoreland County 9.2
  • Median Pennsylvania town on this site 0.5

Hail days 2006–2025

  • Irwin 6
  • Westmoreland County 66
  • Median Pennsylvania town on this site 6

Share 2 in or larger of sized reports

  • Irwin 0%
  • Westmoreland County 2%
  • Median Pennsylvania town on this site 0%

Hail over time

051015 2009: 1 reports, largest 0.88 in 2010 2011: 3 reports, largest 1.75 in 2012: 11 reports, largest 1.75 in 2015 2020 2025
Reports per year, 2009–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
02468 Jan Feb March: 6 reports (40%) Mar Apr May: 1 reports (7%) May June: 1 reports (7%) Jun July: 7 reports (47%) Jul Aug Sep Oct Nov Dec
All 15 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0

Largest hail on record

Largest hail reports in Irwin
Date Size Location County Time · source
Jul 4, 2012 1.75 ingolf ball 0.53 E Circleville Westmoreland 17:27 local · NCEI
Jul 4, 2012 1.75 ingolf ball 0.69 S North Irwin Westmoreland 17:20 local · NCEI
Jul 4, 2012 1.75 ingolf ball 0.53 E Circleville Westmoreland 17:15 local · NCEI
Mar 23, 2011 1.75 ingolf ball 0.69 S North Irwin Westmoreland 15:44 local · NCEI
Mar 23, 2011 1.75 ingolf ball 1.05 W Adamsburg Westmoreland 15:42 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Irwin
Date Size Location County Time · source
Jul 26, 2012 1.00 inquarter 0.69 S North Irwin Westmoreland 16:05 local · NCEI
Jul 4, 2012 1.25 inhalf dollar 0.53 E Circleville Westmoreland 17:56 local · NCEI
Jul 4, 2012 1.25 inhalf dollar 0.53 E Circleville Westmoreland 17:44 local · NCEI
Jul 4, 2012 1.00 inquarter 0.53 E Circleville Westmoreland 17:31 local · NCEI
Jul 4, 2012 1.75 ingolf ball 0.53 E Circleville Westmoreland 17:27 local · NCEI
Jul 4, 2012 1.75 ingolf ball 0.69 S North Irwin Westmoreland 17:20 local · NCEI
Jul 4, 2012 1.75 ingolf ball 0.53 E Circleville Westmoreland 17:15 local · NCEI
May 27, 2012 1.00 inquarter 0.69 S North Irwin Westmoreland 17:14 local · NCEI
Mar 28, 2012 0.88 innickel 0.53 E Circleville Westmoreland 10:34 local · NCEI
Mar 28, 2012 0.75 inpenny 0.69 S North Irwin Westmoreland 09:35 local · NCEI
Mar 28, 2012 0.75 inpenny 0.53 E Circleville Westmoreland 09:23 local · NCEI
Mar 23, 2011 1.75 ingolf ball 0.69 S North Irwin Westmoreland 15:44 local · NCEI

Hail history near Irwin

Questions about hail in Irwin

How often does it hail in Irwin, Pennsylvania?

15 hail reports have been logged in and within about 5 km (3 miles) of Irwin since 2009. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #42 of 108 Pennsylvania places by number of reports.

When is hail season in Irwin?

Most reports come in July, March, May. July alone accounts for 47% of all reports.

What is the largest hail recorded in Irwin?

1.75 in (golf ball size) on July 4, 2012 near 0.53 E Circleville. 0% of reports here were 2 inches or larger.

When did it last hail in Irwin?

The most recent report in this data is from July 26, 2012 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Irwin had in the last five years?

None: there has been no hail report in and within about 5 km (3 miles) of Irwin since November 3, 2021. The last one was on July 26, 2012.

Where does this hail data come from?

Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.