North Troy, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.9 °F (low) to 53.5 °F (high). Annual precipitation averages 45.6 Inches. North Troy 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.3 °F | 25.1 °F | 3.32 in. |
| February | 6.5 °F | 28.3 °F | 2.65 in. |
| March | 17.3 °F | 37.6 °F | 3.02 in. |
| April | 31.1 °F | 52.1 °F | 3.64 in. |
| May | 43.1 °F | 66.1 °F | 4.08 in. |
| June | 51.8 °F | 74.6 °F | 4.45 in. |
| July | 56.5 °F | 78.9 °F | 4.69 in. |
| August | 55.3 °F | 77.5 °F | 4.44 in. |
| September | 48.1 °F | 69.9 °F | 3.74 in. |
| October | 37.6 °F | 56.4 °F | 4.45 in. |
| November | 27.0 °F | 43.6 °F | 3.53 in. |
| December | 14.7 °F | 31.9 °F | 3.63 in. |
| Annual | 32.9 °F | 53.5 °F | 45.64 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 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 |