New York frost dates: Y
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Yaphank | Apr 18 | Oct 28 | 193 d | 7a |
| Yonkers | Apr 20 | Oct 26 | 189 d | 7b |
| York | May 2 | Oct 14 | 165 d | 6a |
| Yorkshire | May 14 | Oct 6 | 145 d | 5b |
| Yorktown Heights | Apr 25 | Oct 19 | 177 d | 7a |
| Yorkville | May 1 | Oct 13 | 165 d | 5b |
| Youngstown | Apr 29 | Oct 28 | 182 d | 6b |
| Youngsville | May 12 | Oct 7 | 148 d | 5b |
| Yulan | May 3 | Oct 9 | 159 d | 6a |