Searsmont, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.2 °C (low) to 12.5 °C (high). Annual precipitation averages 1268.7 Millimeters. Searsmont 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 | -11.8 °C | -1.7 °C | 99.31 mm |
| February | -10.8 °C | 0 °C | 89.41 mm |
| March | -5.5 °C | 4.5 °C | 101.6 mm |
| April | 0.8 °C | 11.3 °C | 116.84 mm |
| May | 6.6 °C | 17.7 °C | 95.5 mm |
| June | 11.8 °C | 22.5 °C | 110.24 mm |
| July | 15.1 °C | 25.7 °C | 81.79 mm |
| August | 14.4 °C | 25.3 °C | 89.41 mm |
| September | 10.2 °C | 21.2 °C | 100.58 mm |
| October | 4.3 °C | 14.4 °C | 151.13 mm |
| November | -1.1 °C | 7.7 °C | 114.81 mm |
| December | -7.2 °C | 1.6 °C | 118.11 mm |
| Annual | 2.2 °C | 12.5 °C | 1268.73 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |