South Carolina frost dates: H
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Hamer | Mar 28 | Nov 8 | 225 d | 8b |
| Hampton | Mar 6 | Nov 26 | 265 d | 8b |
| Hanahan | Mar 7 | Nov 27 | 265 d | 9a |
| Hardeeville | Mar 2 | Nov 30 | 273 d | 9a |
| Harleyville | Mar 22 | Nov 12 | 235 d | 8b |
| Hartsville | Mar 30 | Nov 6 | 221 d | 8b |
| Heath Springs | Mar 23 | Nov 14 | 236 d | 8a |
| Hemingway | Mar 23 | Nov 15 | 237 d | 8b |
| Hickory Grove | Apr 20 | Oct 24 | 187 d | 8a |
| Hilda | Mar 22 | Nov 9 | 232 d | 8b |
| Hilton Head Island | Mar 3 | Dec 9 | 281 d | 9b |
| Hodges | Apr 1 | Nov 2 | 215 d | 8a |
| Holly Hill | Mar 22 | Nov 12 | 235 d | 8b |
| Hollywood | Mar 1 | Dec 6 | 280 d | 9a |
| Honea Path | Apr 1 | Nov 4 | 217 d | 8a |
| Hopkins | Mar 13 | Nov 19 | 251 d | 8b |
| Horatio | Mar 21 | Nov 13 | 237 d | 8b |
| Huger | Mar 22 | Nov 13 | 236 d | 8b |