Witherbee, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31.4 °F (low) to 53.3 °F (high). Annual precipitation averages 43.7 Inches. Witherbee is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.6 °F | 26.3 °F | 2.91 in. |
| February | 6.8 °F | 29.2 °F | 2.41 in. |
| March | 15.4 °F | 37.9 °F | 3.02 in. |
| April | 29.6 °F | 52.2 °F | 3.33 in. |
| May | 41.1 °F | 65.0 °F | 3.87 in. |
| June | 50.4 °F | 73.4 °F | 4.51 in. |
| July | 55.2 °F | 78.2 °F | 4.87 in. |
| August | 53.3 °F | 76.6 °F | 4.04 in. |
| September | 45.2 °F | 69.7 °F | 3.57 in. |
| October | 34.9 °F | 55.9 °F | 4.2 in. |
| November | 25.2 °F | 43.0 °F | 3.61 in. |
| December | 14.0 °F | 32.1 °F | 3.35 in. |
| Annual | 31.4 °F | 53.3 °F | 43.69 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 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 |