Michigan frost dates: A
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Acme | May 12 | Oct 16 | 157 d | 6a |
| Ada | Apr 29 | Oct 20 | 174 d | 6a |
| Addison | May 5 | Oct 10 | 158 d | 6a |
| Adrian | May 1 | Oct 15 | 167 d | 6a |
| Afton | May 22 | Oct 2 | 133 d | 4b |
| Ahmeek | May 17 | Oct 1 | 137 d | 5b |
| Akron | May 7 | Oct 9 | 155 d | 6a |
| Alanson | May 31 | Sep 18 | 110 d | 5a |
| Alba | May 15 | Oct 7 | 145 d | 5b |
| Albion | May 1 | Oct 14 | 166 d | 6a |
| Alden | May 24 | Oct 1 | 130 d | 5b |
| Alger | May 15 | Oct 4 | 142 d | 5b |
| Algonac | May 3 | Oct 18 | 168 d | 6b |
| Allegan | May 4 | Oct 15 | 164 d | 6a |
| Allen | May 3 | Oct 12 | 162 d | 6a |
| Allen Park | May 1 | Oct 15 | 167 d | 6b |
| Allendale | Apr 30 | Oct 24 | 177 d | 6a |
| Allenton | May 1 | Oct 20 | 172 d | 6a |
| Allouez | May 17 | Oct 1 | 137 d | 5b |
| Alma | May 1 | Oct 13 | 165 d | 6a |
| Almont | May 1 | Oct 20 | 172 d | 6a |
| Alpena | May 5 | Oct 17 | 165 d | 5b |
| Alpha | May 24 | Sep 25 | 124 d | 4b |
| Alto | Apr 30 | Oct 14 | 167 d | 6a |
| Amasa | Jun 6 | Sep 9 | 95 d | 4a |
| Anchorville | May 1 | Oct 20 | 172 d | 6b |
| Ann Arbor | May 8 | Oct 4 | 149 d | 6a |
| Applegate | May 4 | Oct 24 | 173 d | 6a |
| Arcadia | May 7 | Oct 20 | 166 d | 6b |
| Argyle | May 2 | Oct 16 | 167 d | 6a |
| Armada | May 1 | Oct 20 | 172 d | 6a |
| Arnold | May 13 | Oct 2 | 142 d | |
| Ashley | Apr 28 | Oct 24 | 179 d | 6a |
| Athens | Apr 30 | Oct 19 | 172 d | 6a |
| Atlanta | May 22 | Sep 27 | 128 d | 5a |
| Atlantic Mine | May 17 | Oct 1 | 137 d | 5b |
| Atlas | May 1 | Oct 14 | 166 d | 6a |
| Attica | May 4 | Oct 14 | 163 d | 6a |
| Au Gres | May 5 | Oct 10 | 158 d | 6a |
| Au Train | May 30 | Sep 27 | 120 d | 5b |
| Auburn | May 3 | Oct 14 | 164 d | 6a |
| Auburn Hills | Apr 26 | Oct 22 | 179 d | 6a |
| Augusta | Apr 29 | Oct 20 | 174 d | 6a |
| Avoca | May 12 | Oct 5 | 146 d | 6a |
| Azalia | Apr 27 | Oct 21 | 177 d | 6a |