New York frost dates: J
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Jackson Heights | Mar 26 | Nov 25 | 244 d | 7b |
| Jacksonville | May 10 | Oct 8 | 151 d | 6a |
| Jamaica | Apr 2 | Nov 14 | 226 d | 7b |
| Jamesport | Apr 19 | Nov 1 | 196 d | 7a |
| Jamestown | May 8 | Oct 13 | 158 d | 6a |
| Jamesville | Apr 29 | Oct 19 | 173 d | 5b |
| Jasper | May 14 | Oct 5 | 144 d | 5b |
| Java Center | May 7 | Oct 10 | 156 d | 5b |
| Java Village | May 7 | Oct 10 | 156 d | 5b |
| Jay | May 27 | Sep 22 | 118 d | 5a |
| Jefferson | May 18 | Oct 2 | 137 d | 5b |
| Jefferson Valley | Apr 30 | Oct 17 | 170 d | 6b |
| Jeffersonville | May 12 | Oct 7 | 148 d | 6a |
| Jericho | Apr 2 | Nov 12 | 224 d | 7b |
| Jewett | May 20 | Sep 27 | 130 d | 5b |
| Johnsburg | Apr 30 | Oct 16 | 169 d | 4b |
| Johnson | Apr 21 | Oct 22 | 184 d | 6b |
| Johnson City | May 2 | Oct 11 | 162 d | 6a |
| Johnsonville | May 6 | Oct 6 | 153 d | 5b |
| Johnstown | May 11 | Oct 3 | 145 d | 5b |
| Jordan | May 2 | Oct 18 | 169 d | 6a |
| Jordanville | May 5 | Oct 4 | 152 d | 5b |