Massachusetts frost dates: A
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Abington | Apr 22 | Oct 19 | 180 d | 6b |
| Accord | Apr 25 | Oct 22 | 180 d | 6b |
| Acton | May 2 | Oct 6 | 157 d | 6b |
| Acushnet | Apr 29 | Oct 15 | 169 d | 7a |
| Adams | May 10 | Oct 4 | 147 d | 5b |
| Agawam | May 3 | Oct 8 | 158 d | 6b |
| Allston | Apr 19 | Oct 23 | 187 d | 6b |
| Amesbury | May 1 | Oct 12 | 164 d | 6a |
| Amherst | May 5 | Oct 8 | 156 d | 6a |
| Andover | Apr 13 | Oct 28 | 198 d | 6b |
| Arlington | Apr 28 | Oct 10 | 165 d | 6b |
| Arlington Heights | Apr 28 | Oct 10 | 165 d | 6b |
| Ashburnham | May 5 | Oct 7 | 155 d | 6a |
| Ashby | May 1 | Oct 9 | 161 d | 6a |
| Ashfield | May 17 | Oct 1 | 137 d | 5b |
| Ashland | Apr 26 | Oct 12 | 169 d | 6b |
| Ashley Falls | May 3 | Oct 11 | 161 d | 6a |
| Assonet | May 2 | Oct 8 | 159 d | 7a |
| Athol | Apr 25 | Oct 17 | 175 d | 5b |
| Attleboro | Apr 27 | Oct 15 | 171 d | 6b |
| Attleboro Falls | Apr 27 | Oct 15 | 171 d | 6b |
| Auburn | Apr 23 | Oct 21 | 181 d | 6a |
| Auburndale | Apr 26 | Oct 12 | 169 d | 6b |
| Avon | Apr 22 | Oct 19 | 180 d | 6b |
| Ayer | Apr 29 | Oct 11 | 165 d | 6a |