Maine frost dates: N
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Naples | May 12 | Oct 1 | 142 d | 5a |
| New Gloucester | May 3 | Oct 7 | 157 d | 5b |
| New Harbor | Apr 28 | Oct 21 | 176 d | 6a |
| New Limerick | May 27 | Sep 18 | 114 d | 4b |
| New Portland | May 8 | Oct 5 | 150 d | 4b |
| New Sharon | May 7 | Oct 2 | 148 d | 5a |
| New Sweden | May 7 | Oct 1 | 147 d | 4a |
| New Vineyard | May 16 | Sep 26 | 133 d | 5a |
| Newcastle | Apr 27 | Oct 18 | 174 d | 5b |
| Newfield | May 14 | Sep 30 | 139 d | 5b |
| Newport | May 8 | Oct 3 | 148 d | 4b |
| Newry | May 19 | Oct 1 | 135 d | 5a |
| Nobleboro | Apr 27 | Oct 18 | 174 d | 5b |
| Norridgewock | May 8 | Oct 5 | 150 d | 5a |
| North Anson | May 8 | Oct 5 | 150 d | 5a |
| North Berwick | May 1 | Oct 14 | 166 d | 5b |
| North Bridgton | May 5 | Oct 5 | 153 d | 5a |
| North Haven | Apr 27 | Oct 19 | 175 d | 6a |
| North Jay | May 11 | Sep 29 | 141 d | 5a |
| North Monmouth | May 1 | Oct 10 | 162 d | 5b |
| North Turner | May 6 | Oct 3 | 150 d | 5b |
| North Vassalboro | May 2 | Oct 10 | 161 d | 5b |
| North Waterboro | May 14 | Sep 30 | 139 d | 5a |
| North Waterford | May 6 | Oct 2 | 149 d | 5a |
| North Yarmouth | Apr 28 | Oct 19 | 174 d | 6a |
| Northeast Harbor | Apr 27 | Oct 22 | 178 d | 6a |
| Norway | May 6 | Oct 2 | 149 d | 5a |