Michigan frost dates: H
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Hadley | May 1 | Oct 14 | 166 d | 6a |
| Hagar Shores | May 5 | Oct 15 | 163 d | 6b |
| Hale | May 23 | Sep 26 | 126 d | 5a |
| Hamburg | May 5 | Oct 13 | 161 d | 6a |
| Hamilton | Apr 28 | Oct 21 | 176 d | 6a |
| Hamtramck | Apr 21 | Oct 31 | 193 d | 6b |
| Hancock | May 17 | Oct 1 | 137 d | 5b |
| Hanover | May 3 | Oct 12 | 162 d | 6a |
| Harbert | Apr 27 | Oct 25 | 181 d | 6b |
| Harbor Beach | May 2 | Oct 24 | 175 d | 6a |
| Harbor Springs | May 15 | Oct 16 | 154 d | 5b |
| Harper Woods | Apr 29 | Oct 22 | 176 d | 6b |
| Harrietta | May 28 | Sep 25 | 120 d | 5b |
| Harris | May 13 | Oct 7 | 147 d | 5a |
| Harrison | May 9 | Oct 4 | 148 d | 5a |
| Harrison Township | Apr 30 | Oct 24 | 177 d | 6b |
| Harrisville | May 8 | Oct 16 | 161 d | 5b |
| Harsens Island | May 3 | Oct 18 | 168 d | 6b |
| Hart | May 12 | Oct 10 | 151 d | 6a |
| Hartford | Apr 22 | Oct 30 | 191 d | 6a |
| Hartland | May 6 | Oct 12 | 159 d | 6a |
| Haslett | Apr 28 | Oct 17 | 172 d | 6a |
| Hastings | May 3 | Oct 12 | 162 d | 6a |
| Hawks | May 10 | Oct 14 | 157 d | 5a |
| Hazel Park | Apr 21 | Oct 31 | 193 d | 6b |
| Hemlock | Apr 26 | Oct 17 | 174 d | 6a |
| Henderson | May 1 | Oct 15 | 167 d | 6a |
| Hermansville | May 22 | Sep 27 | 128 d | 5a |
| Herron | May 17 | Oct 1 | 137 d | 5a |
| Hersey | May 13 | Oct 2 | 142 d | 5a |
| Hesperia | May 17 | Oct 1 | 137 d | 5b |
| Hessel | Jun 1 | Sep 21 | 112 d | 5a |
| Hickory Corners | Apr 29 | Oct 20 | 174 d | 6a |
| Higgins Lake | May 19 | Sep 23 | 127 d | 5a |
| Highland | May 6 | Oct 12 | 159 d | 6a |
| Highland Park | Apr 21 | Oct 31 | 193 d | 6b |
| Hillman | May 22 | Sep 27 | 128 d | 5a |
| Hillsdale | May 3 | Oct 12 | 162 d | 6a |
| Holland | Apr 28 | Oct 21 | 176 d | 6b |
| Holly | May 10 | Oct 6 | 149 d | 6a |
| Holt | Apr 28 | Oct 17 | 172 d | 6a |
| Holton | May 8 | Oct 11 | 156 d | 6a |
| Homer | May 2 | Oct 13 | 164 d | 6a |
| Honor | May 2 | Oct 26 | 177 d | 6b |
| Hope | Apr 29 | Oct 16 | 170 d | 6a |
| Hopkins | May 4 | Oct 15 | 164 d | 6a |
| Horton | May 1 | Oct 14 | 166 d | 6a |
| Houghton | May 17 | Oct 1 | 137 d | 5b |
| Houghton Lake | May 20 | Oct 1 | 134 d | 5a |
| Houghton Lake Heights | May 20 | Oct 1 | 134 d | 5a |
| Howard City | May 18 | Sep 28 | 133 d | 5b |
| Howell | May 4 | Oct 7 | 156 d | 6a |
| Hubbard Lake | May 17 | Oct 1 | 137 d | 5a |
| Hubbardston | May 3 | Oct 12 | 162 d | 6a |
| Hubbell | May 17 | Oct 1 | 137 d | 5b |
| Hudson | May 4 | Oct 7 | 156 d | 6a |
| Hudsonville | May 6 | Oct 10 | 157 d | 6a |
| Hulbert | frost any month | 5a | ||
| Huntington Woods | Apr 27 | Oct 25 | 181 d | 6b |