Enfield, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.5 °C (low) to 12.9 °C (high). Annual precipitation averages 1076.7 Millimeters. Enfield is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.2 °C | -2 °C | 72.39 mm |
| February | -12.7 °C | -0.1 °C | 61.98 mm |
| March | -7.4 °C | 4.7 °C | 80.01 mm |
| April | -0.9 °C | 12.3 °C | 83.82 mm |
| May | 5.7 °C | 19.5 °C | 88.39 mm |
| June | 10.4 °C | 23.9 °C | 104.65 mm |
| July | 13.4 °C | 26.7 °C | 109.22 mm |
| August | 12.3 °C | 25.8 °C | 94.49 mm |
| September | 8.2 °C | 21.8 °C | 91.69 mm |
| October | 2 °C | 14.3 °C | 117.6 mm |
| November | -3.1 °C | 7.3 °C | 82.3 mm |
| December | -8.7 °C | 1.1 °C | 90.17 mm |
| Annual | 0.5 °C | 12.9 °C | 1076.71 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 |