New Jersey frost dates
Across 48 NOAA climate stations in New Jersey, the median last spring frost (32°F) ranges from Mar 26 at Atlantic City to May 1 at Sussex AP; the typical station sees its last frost around Apr 17 and its first fall frost around Oct 27.
“Median” dates have a 50% chance of a later spring frost or an earlier fall frost. “10% risk” dates are the safer choice for tender plants: only 1 year in 10 has frost beyond them. Source: NOAA NCEI 1991–2020 Climate Normals. Elevation matters: within a state, frost dates can differ by a month or more between valleys and hills.
| Station | Elevation | Last frost (median) | Last frost (10% risk) | First frost (median) | First frost (10% risk) | Growing season |
|---|---|---|---|---|---|---|
| Andover Aeroflex AP | 583 ft | Apr 25 | May 11 | Oct 19 | Oct 5 | 175 days |
| Atlantic City | 10 ft | Mar 26 | Apr 6 | Nov 21 | Nov 6 | 240 days |
| Atlantic City Intl AP | 60 ft | Apr 18 | May 5 | Oct 29 | Oct 13 | 190 days |
| Belleplain Stn Forest | 30 ft | Apr 24 | May 18 | Oct 22 | Oct 8 | 181 days |
| Belvidere Brg | 263 ft | Apr 30 | May 18 | Oct 18 | Oct 3 | 168 days |
| Boonton 1 Se | 280 ft | Apr 17 | May 5 | Oct 23 | Oct 8 | 189 days |
| Brant Beach-Beach Haven | 5 ft | Apr 1 | Apr 15 | Nov 15 | Nov 2 | 230 days |
| Caldwell Essex Co AP | 173 ft | Apr 14 | Apr 30 | Oct 28 | Oct 13 | 196 days |
| Canoe Brook | 180 ft | Apr 18 | May 6 | Oct 27 | Oct 11 | 189 days |
| Cape May 2 Nw | 20 ft | Apr 1 | Apr 15 | Nov 9 | Oct 26 | 222 days |
| Charlotteburg Rsvr | 778 ft | Apr 25 | May 11 | Oct 17 | Oct 2 | 174 days |
| Cranford | 80 ft | Apr 11 | Apr 28 | Oct 31 | Oct 14 | 202 days |
| Essex Fells Service Bldg | 350 ft | Apr 18 | May 7 | Oct 24 | Oct 8 | 187 days |
| Estell Manor | 85 ft | Apr 24 | May 12 | Oct 22 | Oct 8 | 180 days |
| Flemington 5 Nnw | 265 ft | Apr 24 | May 11 | Oct 21 | Oct 6 | 179 days |
| Freehold-Marlboro | 194 ft | Apr 17 | May 6 | Oct 23 | Oct 9 | 190 days |
| Glassboro 2 Ne | 100 ft | Apr 8 | Apr 22 | Nov 1 | Oct 18 | 205 days |
| Hammonton 1 Ne | 125 ft | Apr 14 | Apr 27 | Oct 27 | Oct 13 | 196 days |
| Harrison | 24 ft | Apr 4 | Apr 16 | Nov 6 | Oct 25 | 216 days |
| Hightstown 2 W | 100 ft | Apr 25 | May 12 | Oct 16 | Oct 4 | 173 days |
| Indian Mills 2 W | 100 ft | Apr 28 | May 16 | Oct 15 | Oct 3 | 169 days |
| Lambertville | 68 ft | Apr 16 | Apr 30 | Oct 19 | Oct 4 | 185 days |
| Little Falls | 150 ft | Apr 15 | May 1 | Oct 28 | Oct 13 | 195 days |
| Long Branch-Oakhurst | 30 ft | Apr 9 | Apr 23 | Nov 3 | Oct 21 | 208 days |
| Margate | 16 ft | Mar 26 | Apr 7 | Nov 22 | Nov 7 | 243 days |
| Millville Muni AP | 70 ft | Apr 24 | May 10 | Oct 23 | Oct 10 | 181 days |
| Moorestown | 45 ft | Apr 12 | May 3 | Nov 1 | Oct 17 | 200 days |
| Mt Holly S Jersey AP | 53 ft | Apr 15 | May 2 | Oct 28 | Oct 12 | 195 days |
| New Brunswick 3 Se | 111 ft | Apr 15 | May 1 | Oct 26 | Oct 11 | 193 days |
| Newark Intl AP | 7 ft | Apr 2 | Apr 15 | Nov 10 | Oct 28 | 222 days |
| Newton | 605 ft | Apr 24 | May 9 | Oct 16 | Oct 2 | 176 days |
| Pennsauken 1N | 46 ft | Apr 15 | May 1 | Oct 31 | Oct 16 | 199 days |
| Philadelphia/Mt Holly Wfo | 63 ft | Apr 15 | Apr 29 | Oct 29 | Oct 14 | 196 days |
| Phillipsburg-Easton Brg | 232 ft | Apr 18 | May 5 | Oct 25 | Oct 11 | 188 days |
| Plainfield | 90 ft | Apr 11 | Apr 27 | Oct 28 | Oct 13 | 198 days |
| Seabrook Farms | 104 ft | Apr 10 | Apr 25 | Nov 1 | Oct 16 | 205 days |
| Somerville 4 Nw | 134 ft | Apr 30 | May 14 | Oct 20 | Oct 5 | 172 days |
| Somerville Somerset AP | 105 ft | Apr 26 | May 13 | Oct 18 | Oct 5 | 176 days |
| Sussex 3 Wnw | 667 ft | Apr 30 | May 18 | Oct 11 | Sep 30 | 163 days |
| Sussex 8 Nnw | 1,020 ft | Apr 20 | May 5 | Oct 20 | Oct 5 | 181 days |
| Sussex AP | 421 ft | May 1 | May 18 | Oct 12 | Sep 30 | 164 days |
| Teterboro AP | 9 ft | Apr 3 | Apr 16 | Nov 4 | Oct 21 | 215 days |
| Toms River | 10 ft | Apr 23 | May 12 | Oct 20 | Oct 8 | 179 days |
| Trenton Mercer Co AP | 184 ft | Apr 10 | Apr 25 | Nov 1 | Oct 15 | 202 days |
| Trenton State College | 100 ft | Apr 17 | May 6 | Oct 28 | Oct 11 | 192 days |
| Wanaque Raymond Dam | 245 ft | Apr 19 | May 3 | Oct 23 | Oct 9 | 188 days |
| Wertsville 4 Ne | 283 ft | Apr 16 | May 1 | Oct 27 | Oct 10 | 192 days |
| Woodstown Pittsgrov 4E | 98 ft | Apr 11 | Apr 27 | Nov 3 | Oct 18 | 206 days |
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