Louisiana frost dates: J
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Jackson | Mar 2 | Nov 24 | 267 d | 9a |
| Jamestown | Mar 19 | Nov 9 | 235 d | 8b |
| Jarreau | Feb 19 | Dec 5 | 289 d | 9a |
| Jeanerette | Feb 15 | Dec 3 | 291 d | 9b |
| Jena | Mar 19 | Nov 12 | 238 d | 8b |
| Jennings | Feb 19 | Dec 4 | 288 d | 9a |
| Jigger | Mar 10 | Nov 16 | 251 d | 8b |
| Jones | Mar 14 | Nov 10 | 241 d | 8b |
| Jonesboro | Mar 19 | Nov 9 | 235 d | 8b |
| Jonesville | Mar 6 | Nov 22 | 261 d | 9a |
| Joyce | Mar 13 | Nov 10 | 242 d | 8b |