Vernon, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36 °F (low) to 58.4 °F (high). Annual precipitation averages 50.2 Inches. Vernon is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.3 °F | 32.2 °F | 3.72 in. |
| February | 13.6 °F | 35.6 °F | 3.29 in. |
| March | 22.6 °F | 43.9 °F | 3.89 in. |
| April | 33.2 °F | 57.0 °F | 3.94 in. |
| May | 44.3 °F | 69.1 °F | 4.0 in. |
| June | 53.9 °F | 78.0 °F | 4.77 in. |
| July | 59.0 °F | 83.1 °F | 3.98 in. |
| August | 57.2 °F | 81.5 °F | 4.39 in. |
| September | 49.3 °F | 74.0 °F | 4.72 in. |
| October | 38.0 °F | 60.7 °F | 5.3 in. |
| November | 28.8 °F | 48.5 °F | 3.97 in. |
| December | 19.6 °F | 37.5 °F | 4.21 in. |
| Annual | 36 °F | 58.4 °F | 50.18 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |