New Jersey frost dates: H
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Hackensack | Apr 3 | Nov 4 | 215 d | 7b |
| Hackettstown | Apr 25 | Oct 19 | 177 d | 6b |
| Haddon Heights | Apr 15 | Oct 31 | 199 d | 7b |
| Haddonfield | Apr 15 | Oct 31 | 199 d | 7b |
| Hainesport | Apr 15 | Oct 29 | 197 d | 7b |
| Haledon | Apr 15 | Oct 28 | 196 d | 7a |
| Hamburg | May 1 | Oct 12 | 164 d | 6b |
| Hammonton | Apr 14 | Oct 27 | 196 d | 7a |
| Hampton | Apr 24 | Oct 21 | 180 d | 7a |
| Hancocks Bridge | Apr 10 | Nov 1 | 205 d | 7b |
| Harrington Park | Apr 20 | Oct 26 | 189 d | 7a |
| Harrison | Apr 4 | Nov 6 | 216 d | 7b |
| Harrisonville | Apr 8 | Nov 1 | 207 d | 7b |
| Hasbrouck Heights | Apr 3 | Nov 4 | 215 d | 7b |
| Haskell | Apr 19 | Oct 23 | 187 d | 7a |
| Haworth | Apr 20 | Oct 26 | 189 d | 7a |
| Hawthorne | Apr 15 | Oct 28 | 196 d | 7a |
| Hazlet | Apr 17 | Oct 23 | 189 d | 7b |
| Heislerville | Apr 24 | Oct 22 | 181 d | 7b |
| Helmetta | Apr 15 | Oct 26 | 194 d | 7a |
| Hewitt | Apr 19 | Oct 23 | 187 d | 6b |
| Hibernia | Apr 17 | Oct 23 | 189 d | 6b |
| High Bridge | Apr 24 | Oct 21 | 180 d | 7a |
| Highland Lakes | May 1 | Oct 12 | 164 d | 6b |
| Highland Park | Apr 15 | Oct 26 | 194 d | 7a |
| Highlands | Apr 9 | Nov 3 | 208 d | 7b |
| Hightstown | Apr 25 | Oct 16 | 174 d | 7a |
| Hillsborough | Apr 16 | Oct 27 | 194 d | 7a |
| Hillsdale | Apr 20 | Oct 26 | 189 d | 7a |
| Hillside | Apr 2 | Nov 10 | 222 d | 7b |
| Ho Ho Kus | Apr 15 | Oct 28 | 196 d | 7a |
| Hoboken | Mar 30 | Nov 20 | 235 d | 7b |
| Holmdel | Apr 17 | Oct 23 | 189 d | 7b |
| Hopatcong | Apr 25 | Oct 19 | 177 d | 6b |
| Hope | Apr 30 | Oct 18 | 171 d | 6b |
| Hopewell | Apr 16 | Oct 27 | 194 d | 7a |
| Howell | Apr 17 | Oct 23 | 189 d | 7a |