Louisiana frost dates: H
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Hackberry | Feb 3 | Dec 24 | 324 d | 9b |
| Hahnville | Jan 30 | Dec 31 | 335 d | 9b |
| Hall Summit | Mar 24 | Nov 7 | 228 d | 8b |
| Hamburg | Feb 28 | Nov 24 | 269 d | 9a |
| Hammond | Mar 8 | Nov 19 | 256 d | 9a |
| Harrisonburg | Mar 19 | Nov 12 | 238 d | 9a |
| Harvey | Feb 1 | Dec 31 | 333 d | 9b |
| Haughton | Mar 6 | Nov 18 | 257 d | 8b |
| Hayes | Feb 10 | Dec 11 | 304 d | 9b |
| Haynesville | Mar 30 | Nov 6 | 221 d | 8b |
| Heflin | Mar 17 | Nov 14 | 242 d | 8b |
| Hessmer | Feb 28 | Nov 24 | 269 d | 9a |
| Hester | Feb 9 | Dec 14 | 308 d | 9a |
| Hineston | Mar 1 | Nov 23 | 267 d | 9a |
| Hodge | Mar 19 | Nov 9 | 235 d | 8b |
| Holden | Mar 7 | Nov 18 | 256 d | 9a |
| Homer | Mar 30 | Nov 6 | 221 d | 8b |
| Hornbeck | Mar 3 | Nov 27 | 269 d | 9a |
| Hosston | Mar 6 | Nov 19 | 258 d | 8b |
| Houma | Feb 5 | Dec 17 | 315 d | 9b |
| Husser | Mar 7 | Nov 18 | 256 d | 9a |