Jeffersonville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.3 °F (low) to 57.6 °F (high). Annual precipitation averages 48.7 Inches. Jeffersonville is located in USDA Plant Hardiness Zone 6a. 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 | 14.0 °F | 32.1 °F | 3.38 in. |
| February | 15.3 °F | 35.3 °F | 2.59 in. |
| March | 22.9 °F | 43.4 °F | 3.45 in. |
| April | 33.5 °F | 57.0 °F | 3.93 in. |
| May | 44.0 °F | 68.6 °F | 4.36 in. |
| June | 53.4 °F | 76.4 °F | 5.15 in. |
| July | 58.1 °F | 81.1 °F | 4.78 in. |
| August | 56.5 °F | 79.1 °F | 4.43 in. |
| September | 49.4 °F | 72.5 °F | 4.66 in. |
| October | 38.1 °F | 60.4 °F | 4.67 in. |
| November | 28.9 °F | 48.0 °F | 3.36 in. |
| December | 21.0 °F | 36.9 °F | 3.94 in. |
| Annual | 36.3 °F | 57.6 °F | 48.7 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |