North Hero, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.9 °C (low) to 13 °C (high). Annual precipitation averages 963.7 Millimeters. 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 | -12.3 °C | -2.6 °C | 61.47 mm |
| February | -11.3 °C | -1.1 °C | 49.02 mm |
| March | -5.9 °C | 4.1 °C | 57.4 mm |
| April | 1.4 °C | 12.2 °C | 79.5 mm |
| May | 8.4 °C | 20 °C | 91.19 mm |
| June | 13.8 °C | 24.1 °C | 112.52 mm |
| July | 16.7 °C | 26.6 °C | 102.11 mm |
| August | 15.5 °C | 26.6 °C | 97.79 mm |
| September | 11.3 °C | 22 °C | 84.07 mm |
| October | 5.3 °C | 14.8 °C | 92.96 mm |
| November | -0.6 °C | 7.7 °C | 67.56 mm |
| December | -7.1 °C | 1.2 °C | 68.07 mm |
| Annual | 2.9 °C | 13 °C | 963.66 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |