Kentucky frost dates: J
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Jackhorn | Apr 21 | Oct 22 | 184 d | 7a |
| Jackson | Apr 19 | Oct 24 | 188 d | 7a |
| Jamestown | Apr 18 | Oct 24 | 189 d | 7a |
| Jeff | Apr 18 | Oct 28 | 193 d | 7a |
| Jeffersonville | Apr 19 | Oct 20 | 184 d | 6b |
| Jenkins | Apr 29 | Oct 16 | 170 d | 7a |
| Jeremiah | Apr 18 | Oct 28 | 193 d | 7a |
| Jetson | Apr 22 | Oct 22 | 183 d | 7a |
| Jonancy | Apr 29 | Oct 16 | 170 d | 7a |
| Jonesville | Apr 23 | Oct 21 | 181 d | 6b |
| Junction City | Apr 9 | Oct 27 | 201 d | 7a |