East Machias, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.9 °F (low) to 53.7 °F (high). Annual precipitation averages 52.7 Inches. East Machias is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.4 °F | 29.4 °F | 4.66 in. |
| February | 10.8 °F | 31.7 °F | 3.78 in. |
| March | 19.5 °F | 39.3 °F | 4.69 in. |
| April | 30.5 °F | 50.3 °F | 4.26 in. |
| May | 40.4 °F | 61.0 °F | 4.07 in. |
| June | 49.1 °F | 70.4 °F | 3.85 in. |
| July | 54.5 °F | 76.0 °F | 3.5 in. |
| August | 53.7 °F | 76.8 °F | 3.25 in. |
| September | 46.3 °F | 69.5 °F | 4.11 in. |
| October | 36.1 °F | 58.3 °F | 5.66 in. |
| November | 28.2 °F | 46.3 °F | 5.35 in. |
| December | 17.7 °F | 35.8 °F | 5.47 in. |
| Annual | 32.9 °F | 53.7 °F | 52.65 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |