Mississippi frost dates: H
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Hamilton | Mar 29 | Nov 5 | 221 d | 8a |
| Harperville | Mar 28 | Nov 2 | 219 d | 8b |
| Harriston | Mar 17 | Nov 12 | 240 d | 8b |
| Harrisville | Mar 10 | Nov 16 | 251 d | 8b |
| Hattiesburg | Mar 7 | Nov 23 | 261 d | 8b |
| Hazlehurst | Mar 14 | Nov 13 | 244 d | 8b |
| Heidelberg | Mar 12 | Nov 12 | 245 d | 8b |
| Hermanville | Mar 17 | Nov 12 | 240 d | 8b |
| Hernando | Mar 28 | Nov 5 | 222 d | 8a |
| Hickory | Mar 24 | Nov 5 | 226 d | 8b |
| Hickory Flat | Apr 8 | Oct 28 | 203 d | 7b |
| Hillsboro | Mar 28 | Nov 2 | 219 d | 8b |
| Holcomb | Mar 7 | Nov 17 | 255 d | 8a |
| Hollandale | Mar 13 | Nov 15 | 247 d | 8b |
| Holly Bluff | Mar 5 | Nov 20 | 260 d | 8b |
| Holly Springs | Apr 6 | Oct 26 | 203 d | 7b |
| Horn Lake | Mar 16 | Nov 16 | 245 d | 8a |
| Houlka | Mar 28 | Nov 8 | 225 d | 8a |
| Houston | Mar 28 | Nov 1 | 218 d | 8a |
| Hurley | Mar 3 | Nov 25 | 267 d | 9a |