Bennington, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35 °F (low) to 56.8 °F (high). Annual precipitation averages 49.1 Inches. Bennington is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.3 °F | 31.2 °F | 3.53 in. |
| February | 13.4 °F | 34.3 °F | 3.32 in. |
| March | 21.5 °F | 42.2 °F | 3.96 in. |
| April | 32.6 °F | 55.9 °F | 3.93 in. |
| May | 43.0 °F | 66.8 °F | 3.85 in. |
| June | 52.4 °F | 75.7 °F | 4.45 in. |
| July | 57.5 °F | 80.9 °F | 4.09 in. |
| August | 55.2 °F | 79.3 °F | 4.0 in. |
| September | 47.8 °F | 72.1 °F | 4.23 in. |
| October | 37.4 °F | 59.1 °F | 5.24 in. |
| November | 27.9 °F | 47.4 °F | 3.98 in. |
| December | 19.1 °F | 36.9 °F | 4.51 in. |
| Annual | 35 °F | 56.8 °F | 49.09 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |