Michigan frost dates: F
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Fair Haven | May 3 | Oct 18 | 168 d | 6b |
| Fairgrove | May 7 | Oct 9 | 155 d | 6a |
| Fairview | May 19 | Oct 2 | 136 d | 5a |
| Falmouth | May 30 | Sep 15 | 108 d | 5a |
| Farmington | May 1 | Oct 17 | 169 d | 6a |
| Farwell | Apr 30 | Oct 20 | 173 d | 5b |
| Felch | May 25 | Sep 24 | 122 d | 4b |
| Fennville | Apr 28 | Oct 21 | 176 d | 6b |
| Fenton | May 3 | Oct 12 | 162 d | 6a |
| Fenwick | May 18 | Sep 28 | 133 d | 6a |
| Ferndale | Apr 21 | Oct 31 | 193 d | 6b |
| Ferrysburg | Apr 30 | Oct 24 | 177 d | 6b |
| Fife Lake | May 24 | Oct 1 | 130 d | 5b |
| Filer City | May 14 | Oct 12 | 151 d | 6b |
| Filion | May 8 | Oct 17 | 162 d | 6a |
| Flat Rock | Apr 27 | Oct 20 | 176 d | 6b |
| Flint | May 3 | Oct 13 | 163 d | 6a |
| Flushing | May 3 | Oct 13 | 163 d | 6a |
| Forestville | May 2 | Oct 24 | 175 d | 6a |
| Fort Gratiot | Apr 19 | Nov 3 | 198 d | 6a |
| Foster City | May 17 | Oct 1 | 137 d | 4b |
| Fostoria | May 9 | Oct 7 | 151 d | 6a |
| Fountain | May 17 | Oct 7 | 143 d | 6a |
| Fowler | Apr 28 | Oct 24 | 179 d | 6a |
| Fowlerville | May 4 | Oct 7 | 156 d | 6a |
| Frankenmuth | May 3 | Oct 12 | 162 d | 6a |
| Frankfort | May 2 | Oct 26 | 177 d | 6b |
| Franklin | May 1 | Oct 17 | 169 d | 6b |
| Fraser | Apr 30 | Oct 24 | 177 d | 6b |
| Frederic | May 12 | Oct 7 | 148 d | 5a |
| Free Soil | May 14 | Oct 12 | 151 d | 6a |
| Freeland | Apr 26 | Oct 17 | 174 d | 6a |
| Freeport | May 3 | Oct 12 | 162 d | 6a |
| Fremont | May 8 | Oct 11 | 156 d | 5b |
| Frontier | May 3 | Oct 12 | 162 d | 6a |
| Fruitport | Apr 30 | Oct 19 | 172 d | 6b |
| Fulton | Apr 30 | Oct 19 | 172 d | 6a |