Hail history for Duncannon, Pennsylvania
NOAA hail reports in and within about 5 km (3 miles) of Duncannon since 1991, with preliminary reports to November 3, 2026.
Readout · Duncannon
- Last hail
- Sep 7, 2023
- 1.00 in, quarter size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 1.75 in
- golf ball · Aug 2, 2002
10 reports on 7 days since 1991 · #92 of 108 Pennsylvania places
Hail map · Duncannon
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
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 Duncannon is from September 7, 2023. A local roofer can check and document it at no cost.
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What the record says about Duncannon
The latest hail report in and around Duncannon is from September 7, 2023, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on September 7, 2023.
Over the 20 years 2006–2025, Duncannon logged 6 reports on 3 hail days, about 0.3 reports a year. That is 33% less than the median Pennsylvania town on this site (0.5 a year) and ranks #92 of 108 Pennsylvania cities and towns on this site for all-time reports. Duncannon accounts for 29% of the 35 reports filed in Perry 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 August 2, 2002 near Duncannon.
The busiest year was 2009, with 3 reports on 1 day. Hail here peaks in June (30% of reports); 40% fall between April and June.
Reports a year 2006–2025 average
- Duncannon 0.3
- Perry County 0.9
- Median Pennsylvania town on this site 0.5
Hail days 2006–2025
- Duncannon 3
- Perry County 16
- Median Pennsylvania town on this site 6
Share 2 in or larger of sized reports
- Duncannon 0%
- Perry County 0%
- Median Pennsylvania town on this site 0%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Sep 7, 2023 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Aug 2, 2002 | 1.75 ingolf ball | Duncannon | Perry | 14:15 local · NCEI |
| Sep 7, 2023 | 1.00 inquarter | 1.48 NNW Duncannon | Perry | 14:19 local · NCEI |
| Jul 12, 2010 | 1.00 inquarter | 1.48 NNW Duncannon | Perry | 14:05 local · NCEI |
| Jun 9, 2009 | 1.00 inquarter | 1.48 NNW Duncannon | Perry | 12:41 local · NCEI |
| Jun 9, 2009 | 1.00 inquarter | 1.48 NNW Duncannon | Perry | 12:35 local · NCEI |
Size of every report
- Under 1 in 3 30%
- 1–2 in 7 70%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Sep 7, 2023 | 1.00 inquarter | 1.48 NNW Duncannon | Perry | 14:19 local · NCEI |
| Jul 12, 2010 | 1.00 inquarter | 1.48 NNW Duncannon | Perry | 14:05 local · NCEI |
| Jul 12, 2010 | 0.75 inpenny | 1.48 NNW Duncannon | Perry | 14:00 local · NCEI |
| Jun 9, 2009 | 0.75 inpenny | 0.87 SW Duncannon | Perry | 12:48 local · NCEI |
| Jun 9, 2009 | 1.00 inquarter | 1.48 NNW Duncannon | Perry | 12:41 local · NCEI |
| Jun 9, 2009 | 1.00 inquarter | 1.48 NNW Duncannon | Perry | 12:35 local · NCEI |
| Aug 10, 2004 | 1.00 inquarter | Duncannon | Perry | 18:55 local · NCEI |
| Jul 18, 2003 | 0.88 innickel | Duncannon | Perry | 18:05 local · NCEI |
| Aug 2, 2002 | 1.75 ingolf ball | Duncannon | Perry | 14:15 local · NCEI |
| Apr 9, 1991 | 1.00 inquarter | — | Perry | 20:45 local · NCEI |
Hail history near Duncannon
- Harrisburg 18 km · 16
- Carlisle 26 km · 16
- Hershey 35 km · 14
- Elizabethtown 45 km · 11
- Lebanon 52 km · 12
- York 54 km · 14
- Shippensburg 57 km · 10
- Manheim 60 km · 10
Questions about hail in Duncannon
How often does it hail in Duncannon, Pennsylvania?
10 hail reports have been logged in and within about 5 km (3 miles) of Duncannon since 1991. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #92 of 108 Pennsylvania places by number of reports.
When is hail season in Duncannon?
Most reports come in June, July, August. June alone accounts for 30% of all reports.
What is the largest hail recorded in Duncannon?
1.75 in (golf ball size) on August 2, 2002 near Duncannon. 0% of reports here were 2 inches or larger.
When did it last hail in Duncannon?
The most recent report in this data is from September 7, 2023 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Duncannon had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was September 7, 2023.
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.