Woodbourne, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.9 °C (low) to 14 °C (high). Annual precipitation averages 1291.6 Millimeters. Woodbourne is located in USDA Plant Hardiness Zone 6a. 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 | -9.4 °C | -0.1 °C | 90.17 mm |
| February | -8.8 °C | 1.7 °C | 69.85 mm |
| March | -4.5 °C | 6.3 °C | 95 mm |
| April | 1.4 °C | 13.6 °C | 100.58 mm |
| May | 7.2 °C | 19.8 °C | 106.93 mm |
| June | 12.3 °C | 24.4 °C | 132.08 mm |
| July | 14.9 °C | 27.1 °C | 128.27 mm |
| August | 14.1 °C | 26 °C | 117.86 mm |
| September | 10.1 °C | 22.1 °C | 124.46 mm |
| October | 4 °C | 15.3 °C | 123.44 mm |
| November | -1.2 °C | 8.8 °C | 93.47 mm |
| December | -5.9 °C | 2.7 °C | 109.47 mm |
| Annual | 2.9 °C | 14 °C | 1291.58 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |