Wisconsin frost dates: G
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Galesville | Apr 29 | Oct 11 | 165 d | 4b |
| Galloway | May 6 | Oct 5 | 152 d | 4b |
| Gays Mills | May 3 | Oct 7 | 157 d | 5a |
| Genesee Depot | May 1 | Oct 13 | 165 d | 5b |
| Genoa | Apr 22 | Oct 17 | 178 d | 5a |
| Genoa City | Apr 30 | Oct 13 | 166 d | 5b |
| Germantown | May 6 | Oct 8 | 155 d | 5b |
| Gile | May 24 | Sep 28 | 127 d | 4b |
| Gillett | May 14 | Oct 1 | 140 d | 5a |
| Gilman | May 20 | Sep 23 | 126 d | 4a |
| Gilmanton | May 10 | Oct 2 | 145 d | 4b |
| Gleason | May 11 | Sep 30 | 142 d | 4b |
| Glen Flora | May 7 | Oct 3 | 149 d | 4a |
| Glen Haven | Apr 21 | Oct 18 | 180 d | 5a |
| Glenbeulah | May 3 | Oct 10 | 160 d | 5b |
| Glenwood City | May 6 | Oct 2 | 149 d | 4b |
| Glidden | May 22 | Sep 24 | 125 d | 4a |
| Goodman | May 24 | Sep 30 | 129 d | 4b |
| Gordon | May 22 | Sep 26 | 127 d | 4a |
| Gotham | Apr 30 | Oct 9 | 162 d | 5a |
| Grafton | Apr 23 | Oct 24 | 184 d | 6a |
| Grand Marsh | May 9 | Oct 3 | 147 d | 4b |
| Grand View | May 20 | Oct 1 | 134 d | 4b |
| Granton | May 10 | Oct 1 | 144 d | 4b |
| Grantsburg | May 11 | Oct 1 | 143 d | 4a |
| Gratiot | May 3 | Oct 4 | 154 d | 5a |
| Green Bay | Apr 30 | Oct 9 | 162 d | 5b |
| Green Lake | May 8 | Oct 2 | 147 d | 5a |
| Green Valley | May 14 | Oct 1 | 140 d | 5a |
| Greenbush | May 3 | Oct 10 | 160 d | 5b |
| Greendale | May 3 | Oct 14 | 164 d | 5b |
| Greenleaf | May 6 | Oct 6 | 153 d | 5b |
| Greenville | May 4 | Oct 6 | 155 d | 5b |
| Greenwood | May 10 | Oct 1 | 144 d | 4b |
| Gresham | May 13 | Sep 30 | 140 d | 5a |