Maine frost dates: A
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Abbot | May 6 | Oct 7 | 154 d | 5a |
| Acton | May 16 | Sep 30 | 137 d | 5b |
| Addison | May 3 | Oct 9 | 159 d | 6a |
| Albion | May 2 | Oct 10 | 161 d | 5a |
| Alfred | May 16 | Sep 30 | 137 d | 5b |
| Alna | Apr 27 | Oct 18 | 174 d | 5b |
| Andover | May 19 | Sep 25 | 129 d | 4b |
| Anson | May 8 | Oct 5 | 150 d | 5a |
| Ashland | May 14 | Sep 26 | 135 d | 4a |
| Athens | May 11 | Oct 1 | 143 d | 5a |
| Auburn | Apr 25 | Oct 19 | 177 d | 5b |
| Augusta | Apr 27 | Oct 16 | 172 d | 5b |
| Aurora | May 1 | Oct 6 | 158 d | 5a |