Jeffersonville, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.6 °F (low) to 54.5 °F (high). Annual precipitation averages 43.7 Inches. Jeffersonville is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.6 °F | 26.7 °F | 2.72 in. |
| February | 9.0 °F | 29.6 °F | 2.13 in. |
| March | 19.0 °F | 38.7 °F | 2.83 in. |
| April | 32.2 °F | 53.1 °F | 3.51 in. |
| May | 44.5 °F | 66.6 °F | 4.26 in. |
| June | 53.7 °F | 75.0 °F | 4.39 in. |
| July | 58.6 °F | 79.5 °F | 4.65 in. |
| August | 56.8 °F | 78.4 °F | 4.36 in. |
| September | 49.6 °F | 70.9 °F | 4.13 in. |
| October | 38.5 °F | 57.3 °F | 4.28 in. |
| November | 28.3 °F | 44.7 °F | 3.1 in. |
| December | 16.8 °F | 33.0 °F | 3.32 in. |
| Annual | 34.6 °F | 54.5 °F | 43.68 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°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 |