Vernon, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.8 °F (low) to 56.6 °F (high). Annual precipitation averages 43.7 Inches. Vernon is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.7 °F | 30.3 °F | 2.73 in. |
| February | 14.5 °F | 32.4 °F | 2.53 in. |
| March | 22.8 °F | 40.7 °F | 3.12 in. |
| April | 34.7 °F | 55.1 °F | 3.42 in. |
| May | 46.2 °F | 68.3 °F | 3.85 in. |
| June | 55.9 °F | 76.6 °F | 4.42 in. |
| July | 60.7 °F | 81.2 °F | 4.24 in. |
| August | 59.0 °F | 79.5 °F | 4.22 in. |
| September | 51.7 °F | 72.5 °F | 3.86 in. |
| October | 41.1 °F | 59.4 °F | 4.55 in. |
| November | 31.3 °F | 47.1 °F | 3.34 in. |
| December | 21.8 °F | 35.9 °F | 3.39 in. |
| Annual | 37.8 °F | 56.6 °F | 43.67 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |