| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| 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 04631 - Eastport, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 16 | 24 | 33 | 41 | 48 | 54 | 54 | 49 | 40 | 32 | 20 | 35 |
| Avg Max Temp (°F) | 30 | 32 | 39 | 50 | 61 | 69 | 75 | 74 | 66 | 56 | 45 | 35 | 53 |
| Avg Precip (In.) | 4.32 | 3.22 | 3.89 | 3.46 | 3.47 | 3.36 | 3.08 | 2.96 | 3.73 | 3.87 | 4.06 | 4.13 | 43.56 |