Maine frost dates: L
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Lagrange | May 12 | Oct 1 | 142 d | 5a |
| Lambert Lake | May 13 | Oct 1 | 141 d | 5a |
| Lebanon | May 16 | Sep 30 | 137 d | 5b |
| Lee | May 4 | Oct 6 | 155 d | 5a |
| Leeds | May 1 | Oct 10 | 162 d | 5b |
| Levant | May 4 | Oct 4 | 153 d | 5a |
| Lewiston | Apr 25 | Oct 19 | 177 d | 5b |
| Liberty | Apr 27 | Oct 19 | 175 d | 5b |
| Limerick | May 14 | Sep 30 | 139 d | 5a |
| Limestone | May 16 | Sep 24 | 131 d | 4a |
| Limington | May 7 | Oct 4 | 150 d | 5a |
| Lincoln | May 4 | Oct 6 | 155 d | 5a |
| Lincolnville | May 7 | Oct 5 | 151 d | 5b |
| Lincolnville Center | Apr 27 | Oct 19 | 175 d | 5b |
| Lisbon | May 15 | Oct 2 | 140 d | 5b |
| Lisbon Falls | May 15 | Oct 2 | 140 d | 5b |
| Litchfield | May 1 | Oct 11 | 163 d | 5b |
| Little Deer Isle | May 7 | Oct 5 | 151 d | 6a |
| Livermore | May 11 | Sep 29 | 141 d | 5b |
| Livermore Falls | May 11 | Sep 29 | 141 d | 5b |
| Long Island | Apr 26 | Oct 15 | 172 d | 6a |
| Lovell | May 5 | Oct 5 | 153 d | 5a |
| Lubec | Apr 29 | Oct 25 | 179 d | 6a |