Wilmot, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.2 °F (low) to 55 °F (high). Annual precipitation averages 47.5 Inches. Wilmot 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 | 10.4 °F | 28.7 °F | 3.15 in. |
| February | 11.6 °F | 31.8 °F | 2.98 in. |
| March | 19.8 °F | 40.2 °F | 3.46 in. |
| April | 31.4 °F | 53.7 °F | 3.73 in. |
| May | 42.6 °F | 66.3 °F | 3.78 in. |
| June | 51.9 °F | 74.6 °F | 4.54 in. |
| July | 57.3 °F | 79.3 °F | 4.6 in. |
| August | 55.2 °F | 77.8 °F | 3.99 in. |
| September | 47.6 °F | 70.5 °F | 3.89 in. |
| October | 36.8 °F | 57.2 °F | 5.31 in. |
| November | 27.7 °F | 45.4 °F | 3.89 in. |
| December | 18.2 °F | 34.3 °F | 4.15 in. |
| Annual | 34.2 °F | 55 °F | 47.47 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |