North Hero, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.3 °F (low) to 55.3 °F (high). Annual precipitation averages 37.9 Inches. North Hero is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.9 °F | 27.4 °F | 2.42 in. |
| February | 11.6 °F | 30.1 °F | 1.93 in. |
| March | 21.4 °F | 39.3 °F | 2.26 in. |
| April | 34.6 °F | 54.0 °F | 3.13 in. |
| May | 47.2 °F | 68.0 °F | 3.59 in. |
| June | 56.8 °F | 75.3 °F | 4.43 in. |
| July | 62.1 °F | 79.9 °F | 4.02 in. |
| August | 59.9 °F | 79.8 °F | 3.85 in. |
| September | 52.4 °F | 71.6 °F | 3.31 in. |
| October | 41.5 °F | 58.6 °F | 3.66 in. |
| November | 31.0 °F | 45.8 °F | 2.66 in. |
| December | 19.2 °F | 34.1 °F | 2.68 in. |
| Annual | 37.3 °F | 55.3 °F | 37.94 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |