Maine Frost Dates
The median last spring freeze and first fall freeze (32°F) at 82 NOAA stations in Maine, 1991-2020, with the growing season between them.
Every station
A median date has an even chance of a later freeze in spring or an earlier one in fall. Each town page gives the dates at 36, 32 and 28°F and every probability from 10 to 90 percent.
| Station | Elevation | Last freeze | First freeze | Season, days | Town page |
|---|---|---|---|---|---|
| Acadia Np | 470 ft | April 27 | October 22 | 178 | Bar Harbor |
| Allagash | 596 ft | June 2 | September 15 | 105 | Saint Francis |
| Andover 2 | 822 ft | May 19 | September 25 | 129 | Andover |
| Augusta State AP | 350 ft | April 27 | October 16 | 172 | Augusta |
| Bangor Intl AP | 148 ft | May 4 | October 4 | 153 | Bangor |
| Barnard | 545 ft | May 12 | October 1 | 142 | Sebec |
| Bath | 25 ft | May 10 | October 6 | 149 | North Bath |
| Belfast | 20 ft | May 7 | October 5 | 151 | Belfast |
| Bethel 6 Sse | 790 ft | May 6 | October 2 | 149 | Greenwood |
| Brassua Dam | 1,069 ft | May 23 | September 29 | 129 | Greenville |
| Bridgewater | 420 ft | May 25 | September 18 | 116 | Bridgewater |
| Bridgton 3 Nw | 508 ft | May 5 | October 5 | 153 | Bridgton |
| Brunswick Nas | 70 ft | May 2 | October 10 | 161 | Brunswick Station |
| Cape Neddick | 152 ft | May 1 | October 14 | 166 | Cape Neddick |
| Caribou Muni AP | 624 ft | May 7 | October 1 | 147 | Caribou |
| Clayton Lake | 1,000 ft | May 30 | September 13 | 106 | Saint Francis |
| Corinna | 297 ft | May 8 | October 3 | 148 | Corinna |
| Danforth | 475 ft | May 25 | September 24 | 122 | Danforth |
| Dover-Foxcroft Wwtp | 370 ft | May 15 | September 28 | 136 | Dover-Foxcroft |
| Durham | 140 ft | May 15 | October 2 | 140 | Lisbon Falls |
| E Sangerville | 635 ft | May 6 | October 7 | 154 | Dover-Foxcroft |
| E Surry | 105 ft | May 8 | October 9 | 154 | Surry |
| East Hiram | 528 ft | May 12 | October 1 | 142 | Hiram |
| Eastport | 85 ft | April 29 | October 25 | 179 | Eastport |
| Eustis | 1,260 ft | May 24 | September 21 | 120 | Eustis |
| Farmington | 405 ft | May 16 | September 26 | 133 | Farmington |
| Frenchville Aroostook AP | 988 ft | May 6 | October 2 | 149 | Saint Agatha |
| Fryeburg E Slopes AP | 445 ft | May 17 | September 25 | 131 | Fryeburg |
| Ft Kent | 610 ft | May 23 | September 24 | 124 | Fort Kent |
| Gardiner | 133 ft | May 1 | October 11 | 163 | Gardiner |
| Grand Lake Stream | 290 ft | May 4 | October 10 | 159 | Princeton |
| Gray | 378 ft | April 28 | October 19 | 174 | Gray |
| Greenville Maine Forestry Svc | 1,037 ft | May 7 | October 9 | 155 | Greenville |
| Harmony | 320 ft | May 11 | October 1 | 143 | Harmony |
| Hartford | 705 ft | May 6 | October 3 | 150 | Hartford |
| Hollis | 304 ft | May 14 | September 30 | 139 | Lake Arrowhead |
| Houlton 5N | 390 ft | May 19 | September 23 | 127 | Littleton |
| Houlton Intl AP | 476 ft | May 27 | September 18 | 114 | Houlton |
| Jackman | 1,214 ft | May 26 | September 23 | 120 | Jackman |
| Jonesboro | 194 ft | May 3 | October 9 | 159 | Columbia Falls |
| Kennebunkport | 20 ft | May 9 | October 3 | 147 | Kennebunkport |
| Lewiston | 180 ft | April 25 | October 19 | 177 | Lewiston |
| Limestone 4 Nnw | 737 ft | May 16 | September 24 | 131 | Limestone |
| Lincoln Sanitary District/wtp | 190 ft | May 4 | October 6 | 155 | Lincoln |
| Livermore Falls 1 E | 380 ft | May 11 | September 29 | 141 | Livermore Falls |
| Long Falls Dam | 1,160 ft | May 13 | September 30 | 140 | Eustis |
| Madison | 220 ft | May 8 | October 5 | 150 | Anson |
| Middle Dam | 1,460 ft | May 19 | October 1 | 135 | Andover |
| Millinocket | 360 ft | May 9 | October 5 | 149 | Millinocket |
| Millinocket Muni AP | 406 ft | May 8 | October 1 | 146 | Millinocket |
| Millinocket Wastewater | 360 ft | May 17 | September 29 | 135 | Millinocket |
| Moosehead | 1,037 ft | May 13 | September 30 | 140 | Greenville |
| New Sharon | 480 ft | May 7 | October 2 | 148 | New Sharon |
| Newcastle | 213 ft | April 27 | October 18 | 174 | Newcastle |
| Old Town 2 W | 127 ft | May 13 | September 28 | 138 | Old Town |
| Orono | 115 ft | May 1 | October 6 | 158 | Orono |
| Patten 2 | 820 ft | May 13 | September 30 | 140 | Patten |
| Pittston Farm | 1,100 ft | May 20 | September 23 | 126 | Jackman |
| Pittston Farms Nepp | 1,076 ft | May 21 | September 21 | 123 | Jackman |
| Poland | 570 ft | May 3 | October 7 | 157 | Poland |
| Portland Intl Jetport | 45 ft | April 26 | October 15 | 172 | South Portland Gardens |
| Presque Isle | 599 ft | May 14 | September 26 | 135 | Presque Isle |
| Rangeley | 1,530 ft | May 23 | September 27 | 127 | Phillips |
| Rangeley 2 Nw | 1,780 ft | May 23 | September 24 | 124 | Eustis |
| Robbinston | 115 ft | May 5 | October 13 | 161 | Robbinston |
| Rumford 1 Sse | 630 ft | May 4 | October 6 | 155 | Rumford |
| Rumford 6SW | 630 ft | May 12 | September 29 | 140 | Rumford |
| Sanford 2 Nnw | 289 ft | May 16 | September 30 | 137 | Springvale |
| Sebec Lake | 380 ft | May 16 | October 1 | 138 | Dover-Foxcroft |
| Tenants Harbor | 21 ft | April 27 | October 25 | 181 | Saint George |
| Topsfield 2 | 620 ft | May 6 | October 8 | 155 | Princeton |
| Turner | 565 ft | May 1 | October 10 | 162 | Turner |
| Van Buren 2 | 456 ft | May 23 | September 26 | 126 | Van Buren |
| Vanceboro No 2 | 420 ft | May 13 | October 1 | 141 | Danforth |
| W Rockport 1 Nnw | 361 ft | April 27 | October 19 | 175 | Rockport |
| Waterville Trtmt Plt | 73 ft | May 2 | October 10 | 161 | Waterville |
| Wesley | 410 ft | May 2 | October 15 | 166 | Alexander |
| West Buxton 2 Nnw | 220 ft | May 7 | October 4 | 150 | Limington |
| Westport Island | 90 ft | April 28 | October 21 | 176 | Westport |
| Windham 2NW | 443 ft | April 30 | October 20 | 173 | North Windham |
| Wiscasset AP | 68 ft | May 8 | October 7 | 152 | Wiscasset |
| Woodland | 123 ft | April 21 | October 26 | 188 | Woodland |
Sources
NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal freeze probabilities. Public domain.