South Dakota frost dates: G
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Gann Valley | May 6 | Oct 1 | 148 d | 4b |
| Garden City | May 5 | Oct 5 | 153 d | 4b |
| Garretson | May 1 | Oct 4 | 156 d | 5a |
| Gary | May 7 | Oct 1 | 147 d | 4b |
| Gayville | Apr 27 | Oct 11 | 167 d | 5a |
| Geddes | Apr 30 | Oct 13 | 166 d | 5a |
| Gettysburg | May 7 | Oct 2 | 148 d | 4b |
| Glencross | May 10 | Sep 30 | 143 d | 4b |
| Glenham | May 5 | Oct 4 | 152 d | 4b |
| Goodwin | May 7 | Oct 1 | 147 d | 4b |
| Gregory | May 6 | Oct 3 | 150 d | 5a |
| Grenville | May 1 | Oct 12 | 164 d | 4b |
| Groton | May 6 | Oct 4 | 151 d | 4a |