Hail HistoryHome › New Jersey › Mercer County
Hail history for Mercer County, NJ
38 hail reports in Mercer County since 2006 on 20 days. The largest stones measured 1.75 in (golf ball) on Jul 23, 2008.
Cities in Mercer County
- Trenton
25 hail days - Ewing
22 hail days - Princeton
20 hail days - Mercerville-Hamilton Square
18 hail days - Mercerville
19 hail days - Hamilton Square
17 hail days - White Horse
22 hail days - Twin Rivers
20 hail days - Yardville
22 hail days - Hightstown
20 hail days - Lawrenceville
22 hail days - Robbinsville
15 hail days - Groveville
22 hail days - Pennington
18 hail days
Recent hail in Mercer County
| Date | Hail size | Where |
|---|---|---|
| Jul 27, 2026 | 1 in quarter | Washington Crossin 1 hail report |
One row per day: the largest hail reported in the county that day, the places and the number of reports.
Hail days in Mercer County by year
When hail season peaks in Mercer County
Damaging thunderstorm winds in Mercer County
197 reports of damaging thunderstorm wind in Mercer County since 2006, on 111 days. The strongest measured gust was 71 mph on Apr 1, 2023.
| Date | Strongest gust | Where |
|---|---|---|
| Aug 7, 2026 | damage reported | West Windsor Twp. 1 wind report |
| Jul 18, 2026 | damage reported | Hamilton Square 1 wind report |
| Jul 4, 2026 | damage reported | Washington Crossi, Pennington 2 wind reports |
| Jul 3, 2026 | damage reported | Ewing 1 wind report |
| Jun 22, 2026 | 58 mph, estimated | East Trenton 1 wind report |
| Jun 14, 2026 | 58 mph, estimated | White Horse, Princeton 2 wind reports |
| Jun 6, 2026 | 58 mph, estimated | Ewing Township 1 wind report |
| May 20, 2026 | 63 mph, estimated | Hopewell, Pennington 2 wind reports |
| Mar 16, 2026 | 58 mph, measured | Pennington, Trenton Airport, Ajax Park 8 wind reports |
| Jul 8, 2025 | 58 mph, measured | Ajax Park, Trenton Airport, Lewisville 4 wind reports |
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 Mercer County; 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.
Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).