Hardwick, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31.7 °F (low) to 53.1 °F (high). Annual precipitation averages 43.4 Inches. Hardwick is located in USDA Plant Hardiness Zone 4b. 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 | 5.0 °F | 25.3 °F | 2.66 in. |
| February | 6.2 °F | 28.7 °F | 2.33 in. |
| March | 16.3 °F | 37.8 °F | 2.78 in. |
| April | 29.6 °F | 51.8 °F | 3.43 in. |
| May | 41.8 °F | 65.4 °F | 3.91 in. |
| June | 50.6 °F | 73.7 °F | 4.63 in. |
| July | 55.6 °F | 78.3 °F | 4.66 in. |
| August | 53.4 °F | 76.9 °F | 4.21 in. |
| September | 46.4 °F | 69.5 °F | 3.69 in. |
| October | 35.4 °F | 55.8 °F | 4.49 in. |
| November | 25.5 °F | 42.7 °F | 3.21 in. |
| December | 14.3 °F | 31.2 °F | 3.36 in. |
| Annual | 31.7 °F | 53.1 °F | 43.36 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |