| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 82g - Downeast Coast |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 04640 - Hancock, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 11 | 13 | 23 | 33 | 43 | 51 | 57 | 56 | 49 | 39 | 31 | 18 | 35 |
| Avg Max Temp (°F) | 30 | 33 | 42 | 53 | 65 | 73 | 79 | 78 | 69 | 58 | 46 | 35 | 55 |
| Avg Precip (In.) | 4.62 | 3.41 | 4.31 | 4.19 | 3.86 | 3.63 | 3.37 | 2.88 | 4.07 | 4.29 | 4.86 | 4.38 | 47.88 |