Indiana frost dates: F
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Fair Oaks | Apr 23 | Oct 18 | 178 d | 5b |
| Fairbanks | Apr 8 | Oct 27 | 202 d | 6b |
| Fairland | Apr 14 | Oct 23 | 192 d | 6a |
| Fairmount | Apr 26 | Oct 20 | 177 d | 6a |
| Falmouth | Apr 19 | Oct 23 | 187 d | 6a |
| Farmersburg | Apr 8 | Oct 27 | 202 d | 6b |
| Farmland | Apr 25 | Oct 16 | 174 d | 6a |
| Ferdinand | Apr 11 | Oct 26 | 198 d | 6b |
| Fillmore | Apr 27 | Oct 15 | 171 d | 6a |
| Finly | Apr 19 | Oct 22 | 186 d | 6a |
| Fishers | Apr 21 | Oct 21 | 183 d | 6a |
| Flat Rock | Apr 17 | Oct 22 | 188 d | 6b |
| Flora | Apr 25 | Oct 17 | 175 d | 6a |
| Florence | Apr 17 | Oct 29 | 195 d | 6b |
| Floyds Knobs | Mar 31 | Nov 9 | 223 d | 6b |
| Fontanet | Apr 14 | Oct 24 | 193 d | 6a |
| Forest | Apr 27 | Oct 18 | 174 d | 6a |
| Fort Branch | Apr 13 | Oct 25 | 195 d | 7a |
| Fort Wayne | Apr 24 | Oct 21 | 180 d | 6a |
| Fortville | Apr 19 | Oct 22 | 186 d | 6a |
| Fountain City | Apr 24 | Oct 20 | 179 d | 6a |
| Fountaintown | Apr 14 | Oct 23 | 192 d | 6a |
| Fowler | Apr 25 | Oct 13 | 171 d | 5b |
| Fowlerton | Apr 26 | Oct 20 | 177 d | 6a |
| Francesville | Apr 26 | Oct 17 | 174 d | 5b |
| Francisco | Apr 13 | Oct 25 | 195 d | 6b |
| Frankfort | Apr 21 | Oct 21 | 183 d | 6a |
| Franklin | Apr 20 | Oct 19 | 182 d | 6b |
| Frankton | Apr 24 | Oct 18 | 177 d | 6a |
| Fredericksburg | Apr 17 | Oct 22 | 188 d | 6b |
| Freedom | Apr 20 | Oct 20 | 183 d | 6a |
| Freelandville | Apr 9 | Oct 30 | 204 d | 6b |
| Freetown | Apr 16 | Oct 21 | 188 d | 6b |
| Fremont | Apr 30 | Oct 16 | 169 d | 6a |
| French Lick | Apr 25 | Oct 15 | 173 d | 6b |
| Friendship | Apr 30 | Oct 16 | 169 d | 6b |
| Fulda | Apr 11 | Oct 26 | 198 d | 7a |
| Fulton | Apr 23 | Oct 21 | 181 d | 6a |