Danville, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38 °F (low) to 58.8 °F (high). Annual precipitation averages 47.1 Inches. Danville 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.4 °F | 34.1 °F | 3.28 in. |
| February | 17.1 °F | 36.9 °F | 3.28 in. |
| March | 24.8 °F | 44.5 °F | 4.26 in. |
| April | 35.1 °F | 57.3 °F | 4.15 in. |
| May | 45.3 °F | 67.9 °F | 3.92 in. |
| June | 54.8 °F | 76.9 °F | 4.13 in. |
| July | 60.6 °F | 82.6 °F | 3.55 in. |
| August | 58.9 °F | 81.1 °F | 3.64 in. |
| September | 51.2 °F | 73.8 °F | 3.84 in. |
| October | 39.7 °F | 61.3 °F | 4.87 in. |
| November | 30.7 °F | 50.1 °F | 3.81 in. |
| December | 22.0 °F | 39.3 °F | 4.36 in. |
| Annual | 38 °F | 58.8 °F | 47.09 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |