Hail HistoryHome › Connecticut › Groton
Hail history for Groton, CT
Hail has been reported within 10 miles of Groton on 5 days since 2006. The largest stones measured 1.75 in (golf ball) on Sep 3, 2013. Hail is most common here in May and July.
Recent hail near Groton
No hail was reported within 10 miles of Groton in the last two years.
Hail days near Groton by year
When hail season peaks near Groton
Of the 5 hail days since 2006, most fell in May (2) and July (1).
Largest hail storms near Groton
Sep 3, 2013 · 1.75 in (golf ball) · Hallville (9 mi from Groton)
Jul 2, 2008 · 1 in (quarter) · Gales Ferry (4 mi from Groton)
Jun 1, 2011 · 1 in (quarter) · Uncasville (6 mi from Groton)
May 25, 2014 · 1 in (quarter) · Ledyard Center (9 mi from Groton)
May 24, 2009 · 0.75 in (penny) · Uncasville (7 mi from Groton)
Tornadoes within 10 miles of Groton
| Date | Rating | Where |
|---|---|---|
| Oct 29, 2018 | EF1 | Fishers Is 8 mi from Groton |
Damaging thunderstorm winds near Groton
33 reports of damaging thunderstorm wind within 10 miles of Groton since 2006, on 21 days. The strongest measured gust was 65 mph on Jul 4, 2026.
| Date | Strongest gust | Where |
|---|---|---|
| Jul 4, 2026 | 65 mph, measured | New London, Montville, Poquonock Bridge 6 wind reports |
| Jun 11, 2026 | 58 mph, estimated | Gales Ferry 1 wind report |
| Aug 15, 2024 | 58 mph, estimated | North Stonington 1 wind report |
| Jun 23, 2024 | 58 mph, estimated | Montville 1 wind report |
| Jun 21, 2024 | 58 mph, estimated | North Stonington 1 wind report |
| Jul 27, 2023 | 63 mph, estimated | Gales Ferry, Happyland 2 wind reports |
| Dec 23, 2022 | 58 mph, measured | Fishers Is Airport 1 wind report |
| Nov 13, 2021 | 69 mph, estimated | Wequetequock 1 wind report |
| Jul 1, 2020 | 60 mph, estimated | Hallville 1 wind report |
| Apr 21, 2020 | 58 mph, measured | Fishers Is Airport 1 wind report |
Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.
Filing a roof or car hail claim?
Insurers ask for the date of loss. The dates on this page are when hail was reported near Groton; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.
Nearby cities
- New London
6 hail days - Norwich
12 hail days - Windham
9 hail days - South Kingstown
10 hail days - Mansfield City
16 hail days - Coventry
13 hail days - Middletown
22 hail days - Glastonbury
27 hail days
Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then). Distances are measured from the center of Groton.
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