| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| 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 04654 - Machias, ME | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 11 | 21 | 32 | 41 | 49 | 54 | 54 | 46 | 37 | 29 | 16 | 33 |
| Avg Max Temp (°F) | 29 | 31 | 39 | 50 | 61 | 69 | 75 | 75 | 67 | 56 | 45 | 34 | 53 |
| Avg Precip (In.) | 4.97 | 3.49 | 4.6 | 4.36 | 4.46 | 3.61 | 3.48 | 3.01 | 4.2 | 4.22 | 5.06 | 4.95 | 50.42 |