Massachusetts frost dates: L
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Lake Pleasant | May 1 | Oct 11 | 163 d | 6a |
| Lakeville | Apr 23 | Oct 16 | 176 d | 6b |
| Lancaster | Apr 29 | Oct 11 | 165 d | 6b |
| Lanesborough | May 5 | Oct 5 | 153 d | 5b |
| Lawrence | Apr 13 | Oct 28 | 198 d | 6b |
| Lee | May 7 | Oct 3 | 149 d | 5b |
| Leeds | May 5 | Oct 8 | 156 d | 6a |
| Leicester | Apr 23 | Oct 21 | 181 d | 6b |
| Lenox | May 7 | Oct 3 | 149 d | 5b |
| Lenox Dale | May 7 | Oct 3 | 149 d | 5b |
| Leominster | Apr 29 | Oct 11 | 165 d | 6a |
| Leverett | May 2 | Oct 9 | 160 d | 6a |
| Lexington | Apr 28 | Oct 10 | 165 d | 6b |
| Lincoln | Apr 28 | Oct 10 | 165 d | 6b |
| Linwood | Apr 22 | Oct 19 | 180 d | 6b |
| Littleton | May 2 | Oct 6 | 157 d | 6a |
| Longmeadow | May 3 | Oct 8 | 158 d | 6b |
| Lowell | Apr 30 | Oct 10 | 163 d | 6b |
| Ludlow | May 3 | Oct 14 | 164 d | 6a |
| Lunenburg | Apr 29 | Oct 11 | 165 d | 6a |
| Lynn | Apr 25 | Oct 20 | 178 d | 7a |
| Lynnfield | May 3 | Oct 9 | 159 d | 6b |