Maine frost dates
Median last spring frost and first fall frost for 457 places in Maine. Last frost ranges from Apr 21 in Baileyville to Jun 2 in Estcourt Station.
Largest cities
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Portland | Apr 26 | Oct 15 | 172 d | 6a |
| Lewiston | Apr 25 | Oct 19 | 177 d | 5b |
| Bangor | May 4 | Oct 4 | 153 d | 5a |
| South Portland | Apr 26 | Oct 15 | 172 d | 6a |
| Auburn | Apr 25 | Oct 19 | 177 d | 5b |
| Biddeford | May 9 | Oct 3 | 147 d | 5b |
| Sanford | May 16 | Sep 30 | 137 d | 5b |
| Saco | May 9 | Oct 3 | 147 d | 5b |
| Augusta | Apr 27 | Oct 16 | 172 d | 5b |
| Westbrook | Apr 26 | Oct 15 | 172 d | 5b |
| Waterville | May 2 | Oct 10 | 161 d | 5b |
| Brunswick | May 2 | Oct 10 | 161 d | 5b |
| York Beach | May 1 | Oct 14 | 166 d | 6a |
| Orono | May 13 | Sep 28 | 138 d | 5a |
| Lisbon | May 15 | Oct 2 | 140 d | 5b |
| Brewer | May 4 | Oct 4 | 153 d | 5a |
| Presque Isle | May 14 | Sep 26 | 135 d | 4a |
| Old Orchard Beach | Apr 26 | Oct 15 | 172 d | 6a |
| Bath | May 10 | Oct 6 | 149 d | 6a |
| Buxton | May 7 | Oct 4 | 150 d | 5b |
| Ellsworth | May 8 | Oct 9 | 154 d | 5b |
| Caribou | May 7 | Oct 1 | 147 d | 4a |
| Old Town | May 13 | Sep 28 | 138 d | 5a |
| Waterboro | May 14 | Sep 30 | 139 d | 5b |
| South Berwick | May 1 | Oct 14 | 166 d | 6a |
| Rockland | Apr 27 | Oct 19 | 175 d | 6a |
| Gorham | May 7 | Oct 4 | 150 d | 5b |
| Belfast | May 7 | Oct 5 | 151 d | 5b |
| Eliot | May 3 | Oct 10 | 160 d | 6a |
| Skowhegan | May 8 | Oct 5 | 150 d | 5a |
| Topsham | May 10 | Oct 6 | 149 d | 5b |
| Yarmouth | Apr 28 | Oct 19 | 174 d | 6a |
| Gardiner | May 1 | Oct 11 | 163 d | 5b |
| Turner | May 1 | Oct 10 | 162 d | 5b |
| Lebanon | May 16 | Sep 30 | 137 d | 5b |
| New Gloucester | May 3 | Oct 7 | 157 d | 5b |
| Poland | May 3 | Oct 7 | 157 d | 5b |
| Kennebunk | May 9 | Oct 3 | 147 d | 5b |
| Paris | May 6 | Oct 3 | 150 d | 5b |
| Houlton | May 27 | Sep 18 | 114 d | 4b |