Hail in Mercer County, New Jersey
Radar recorded hail of 1 inch or larger in Mercer County on 4 days since October 2020. That is more than 5% of US counties. It ranks 15 of 21 in New Jersey.
The largest radar estimate was 1.35 inches on April 1, 2023. The most recent 1-inch day was June 30, 2025. Radar estimates and ground reports often differ, so see how they compare.
See the county center on the map
Days of 1-inch hail by year
| Year | Days |
|---|---|
| 2020 (from October) | 0 |
| 2021 | 1 |
| 2022 | 0 |
| 2023 | 1 |
| 2024 | 0 |
| 2025 | 2 |
| 2026 | 0 |
Largest hail days
| Storm day | Radar estimate |
|---|---|
| April 1, 2023 | 1.35 in |
| July 6, 2021 | 1.25 in |
| June 30, 2025 | 1.15 in |
| June 19, 2025 | 1.1 in |
Ground reports
Within this area, storm spotters and weather offices logged 9 hail reports since October 2020, and 10 tornadoes started here since 1950.
Figures cover a circle with the same land area as the county, centered on it, so edges are approximate.
Most hail days in New Jersey
- Burlington County: 17 days
- Bergen County: 10 days
- Hunterdon County: 10 days
- Middlesex County: 10 days
- Monmouth County: 10 days
- Sussex County: 10 days