Ohio frost dates: G
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Galena | Apr 22 | Oct 24 | 185 d | 6b |
| Galion | Apr 26 | Oct 20 | 177 d | 6a |
| Gallipolis | Apr 18 | Oct 28 | 193 d | 6b |
| Galloway | Apr 20 | Oct 24 | 187 d | 6b |
| Gambier | May 2 | Oct 8 | 159 d | 6a |
| Garrettsville | May 1 | Oct 20 | 172 d | 6a |
| Gates Mills | Apr 26 | Oct 31 | 188 d | 6b |
| Geneva | May 2 | Oct 21 | 172 d | 6b |
| Genoa | Apr 20 | Oct 27 | 190 d | 6b |
| Georgetown | Apr 29 | Oct 11 | 165 d | 6b |
| Germantown | Apr 24 | Oct 19 | 178 d | 6b |
| Gettysburg | Apr 21 | Oct 20 | 182 d | 6a |
| Gibsonburg | Apr 21 | Oct 24 | 186 d | 6b |
| Girard | May 1 | Oct 17 | 169 d | 6a |
| Glandorf | Apr 23 | Oct 22 | 182 d | 6a |
| Glencoe | Apr 20 | Oct 29 | 192 d | 6b |
| Glenford | Apr 30 | Oct 17 | 170 d | 6a |
| Glenmont | May 2 | Oct 8 | 159 d | 6a |
| Glouster | Apr 25 | Oct 23 | 181 d | 6b |
| Gnadenhutten | Apr 29 | Oct 15 | 169 d | 6b |
| Gomer | Apr 24 | Oct 24 | 183 d | 6a |
| Goshen | Apr 23 | Oct 18 | 178 d | 6b |
| Grafton | Apr 22 | Nov 1 | 193 d | 6b |
| Grand Rapids | Apr 22 | Oct 24 | 185 d | 6a |
| Grand River | Apr 15 | Nov 9 | 208 d | 7a |
| Granville | Apr 22 | Oct 18 | 179 d | 6a |
| Gratiot | Apr 22 | Oct 18 | 179 d | 6a |
| Gratis | Apr 25 | Oct 20 | 178 d | 6a |
| Graysville | Apr 30 | Oct 14 | 167 d | 6b |
| Graytown | Apr 20 | Oct 27 | 190 d | 6b |
| Green | Apr 24 | Oct 26 | 185 d | 6b |
| Green Camp | Apr 25 | Oct 20 | 178 d | 6a |
| Green Springs | Apr 21 | Oct 24 | 186 d | 6a |
| Greenfield | Apr 23 | Oct 21 | 181 d | 6b |
| Greenford | May 2 | Oct 13 | 164 d | 6a |
| Greentown | Apr 24 | Oct 26 | 185 d | 6b |
| Greenville | Apr 21 | Oct 20 | 182 d | 6a |
| Greenwich | Apr 26 | Oct 22 | 179 d | 6a |
| Grelton | Apr 24 | Oct 21 | 180 d | 6a |
| Grove City | Apr 23 | Oct 19 | 179 d | 6b |
| Groveport | Apr 23 | Oct 19 | 179 d | 6b |
| Grover Hill | Apr 25 | Oct 19 | 177 d | 6a |
| Guysville | Apr 25 | Oct 23 | 181 d | 6b |
| Gypsum | Apr 10 | Nov 5 | 209 d | 6b |