Lincoln, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.6 °C (low) to 13 °C (high). Annual precipitation averages 1331.7 Millimeters. Lincoln is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.8 °C | -1.7 °C | 96.27 mm |
| February | -12.3 °C | 0 °C | 85.85 mm |
| March | -7.3 °C | 4.8 °C | 93.73 mm |
| April | -0.8 °C | 12.3 °C | 105.66 mm |
| May | 5.5 °C | 19.4 °C | 111.76 mm |
| June | 10.4 °C | 24.1 °C | 107.19 mm |
| July | 13.3 °C | 26.6 °C | 136.14 mm |
| August | 12.2 °C | 25.7 °C | 111 mm |
| September | 8.2 °C | 21.6 °C | 113.03 mm |
| October | 2.1 °C | 14.3 °C | 139.95 mm |
| November | -3.1 °C | 7.4 °C | 99.06 mm |
| December | -8.6 °C | 1.3 °C | 132.08 mm |
| Annual | 0.6 °C | 13 °C | 1331.72 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |