Hail History

Hail history for Union County, Pennsylvania

Every NOAA hail report filed in Union County since 1991, with preliminary National Weather Service reports to November 3, 2026.

Readout · Union County

Last hail
May 28, 2019
0.88 in, nickel size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
2.50 in
tennis ball · Sep 18, 1991

15 reports on 12 days since 1991 · #65 of 68 Pennsylvania counties

Hail map · Union County

5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
14 most recent reports with a location. Dot size and colour follow hail size. Open street map

For homeowners

Concerned about your roof after hail?

Send a request to Moxisync Labs for review. The latest hail report in Union County is from May 28, 2019. We’re building local roofer coverage. Submitting a request does not guarantee a quote or book an inspection.

Phone line opening soon

What would a claim cost you? Try the hail claim calculator

Roofer? Get hail alerts for your area with StormScope

What the record says about Union County

The latest hail report in Union County is from May 28, 2019, 0.88 in (nickel size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Union County logged 8 reports on 6 hail days, about 0.4 reports a year. That is 20% of the median Pennsylvania county (2.0 a year) and ranks #65 of 68 Pennsylvania counties for all-time reports. Union County holds 0% of all 5,542 hail reports in Pennsylvania.

7% of reports with a size were 2 inches (hen egg) or larger, against 3% for the median Pennsylvania county. The largest hail on record here is 2.50 in (tennis ball) on September 18, 1991.

Reports were down 40% in 2016–2025 (3) compared with 2006–2015 (5). The busiest year was 1999, with 3 reports on 2 days. Hail here peaks in July (33% of reports); 47% fall between April and June.

Reports a year 2006–2025 average

  • Union County 0.4
  • Median Pennsylvania county 2.0

Hail days 2006–2025

  • Union County 6
  • Median Pennsylvania county 22.5

Share 2 in or larger of sized reports

  • Union County 7%
  • Median Pennsylvania county 3%

Hail over time

0123 1991: 1 reports, largest 2.50 in 1994: 1 reports, largest 0.75 in 1995 1999: 3 reports, largest 1.75 in 2000: 1 reports, largest 0.75 in 2000 2005: 1 reports, largest 0.88 in 2005 2007: 2 reports, largest 1.00 in 2008: 2 reports, largest 0.75 in 2010 2015: 1 reports, largest 1.00 in 2015 2016: 1 reports, largest 1.75 in 2019: 2 reports, largest 1.50 in 2020 2025
Reports per year, 1991–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar Apr May: 4 reports (27%) May June: 3 reports (20%) Jun July: 5 reports (33%) Jul August: 1 reports (7%) Aug September: 1 reports (7%) Sep Oct November: 1 reports (7%) 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 2 2
2018 0
2017 0

Largest hail on record

Largest hail reports in Union County
Date Size Location Time · source
Sep 18, 1991 2.50 intennis ball — 16:59 local · NCEI
Jul 18, 2016 1.75 ingolf ball 0.83 S Allenwood 11:20 local · NCEI
Jul 30, 1999 1.75 ingolf ball New Columbia 16:30 local · NCEI
May 28, 2019 1.50 inping pong ball 0.87 SE Linntown 16:23 local · NCEI
May 31, 2015 1.00 inquarter 0.69 N New Columbia 13:41 local · NCEI

Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.

Size of every report

Most recent reports

Most recent hail reports in Union County
Date Size Location Time · source
May 28, 2019 0.88 innickel 0.83 NNW Lewisburg 16:25 local · NCEI
May 28, 2019 1.50 inping pong ball 0.87 SE Linntown 16:23 local · NCEI
Jul 18, 2016 1.75 ingolf ball 0.83 S Allenwood 11:20 local · NCEI
May 31, 2015 1.00 inquarter 0.69 N New Columbia 13:41 local · NCEI
Aug 7, 2008 0.75 inpenny 1.04 W Mifflinburg 16:05 local · NCEI
Jul 17, 2008 0.75 inpenny 0.69 S Weikert 16:46 local · NCEI
Jun 19, 2007 0.75 inpenny 1.05 W Mifflinburg 15:15 local · NCEI
Jun 19, 2007 1.00 inquarter 1.05 W Mifflinburg 15:12 local · NCEI
Nov 6, 2005 0.88 innickel 4 N Lewisburg 17:10 local · NCEI
May 13, 2000 0.75 inpenny Lewisburg 16:43 local · NCEI
Jul 30, 1999 1.75 ingolf ball New Columbia 16:30 local · NCEI
Jul 30, 1999 0.80 inpenny Allenwood 16:00 local · NCEI

Smaller places with fewer than 10 reports

These places have too few reports for a page of their own, so their record lives here.

PlaceReportsHail daysLatest
Lewisburg43May 28, 2019
Mifflinburg32Aug 7, 2008
Allenwood22Jul 18, 2016
New Columbia22May 31, 2015
Hartleton11Jul 9, 1999

Questions about hail in Union County

How often does it hail in Union County, Pennsylvania?

15 hail reports have been logged in Union County since 1991. Over the 20 years 2006–2025 that averages 0.4 reports a year. That ranks #65 of 68 Pennsylvania counties by number of reports.

When is hail season in Union County?

Most reports come in July, May, June. July alone accounts for 33% of all reports.

What is the largest hail recorded in Union County?

2.50 in (tennis ball size) on September 18, 1991. 7% of reports here were 2 inches or larger.

When did it last hail in Union County?

The most recent report in this data is from May 28, 2019 (0.88 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

None: there has been no hail report in Union County since November 3, 2021. The last one was on May 28, 2019.

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.