Lincolnville, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.3 °C (low) to 12.4 °C (high). Annual precipitation averages 1301.5 Millimeters. Lincolnville is located in USDA Plant Hardiness Zone 6a. 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 | -11.2 °C | -1.2 °C | 106.17 mm |
| February | -10.5 °C | 0 °C | 90.93 mm |
| March | -5.5 °C | 4.3 °C | 107.95 mm |
| April | 0.6 °C | 10.8 °C | 118.62 mm |
| May | 6.3 °C | 17.1 °C | 96.77 mm |
| June | 11.5 °C | 21.8 °C | 115.57 mm |
| July | 14.9 °C | 25.2 °C | 81.28 mm |
| August | 14.4 °C | 24.9 °C | 85.34 mm |
| September | 10.4 °C | 20.9 °C | 105.66 mm |
| October | 4.6 °C | 14.3 °C | 147.57 mm |
| November | -0.8 °C | 8 °C | 121.16 mm |
| December | -6.8 °C | 2.1 °C | 124.46 mm |
| Annual | 2.3 °C | 12.4 °C | 1301.48 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |