Edgecomb, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.8 °C (low) to 12.7 °C (high). Annual precipitation averages 1273.8 Millimeters. Edgecomb is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.8 °C | -1.2 °C | 99.06 mm |
| February | -9.7 °C | 0.4 °C | 90.93 mm |
| March | -4.7 °C | 4.7 °C | 111.25 mm |
| April | 1.2 °C | 11.5 °C | 113.79 mm |
| May | 6.9 °C | 17.7 °C | 94.74 mm |
| June | 12.1 °C | 22.4 °C | 114.05 mm |
| July | 15.4 °C | 25.7 °C | 89.41 mm |
| August | 14.9 °C | 25.3 °C | 80.77 mm |
| September | 10.9 °C | 21.2 °C | 101.09 mm |
| October | 4.9 °C | 14.3 °C | 138.68 mm |
| November | -0.6 °C | 7.9 °C | 116.84 mm |
| December | -6.4 °C | 2.1 °C | 123.19 mm |
| Annual | 2.8 °C | 12.7 °C | 1273.8 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |