West Winfield, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.6 °F (low) to 55.7 °F (high). Annual precipitation averages 46.5 Inches. West Winfield is located in USDA Plant Hardiness Zone 5b. 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 | 12.2 °F | 29.9 °F | 3.07 in. |
| February | 13.8 °F | 32.5 °F | 2.69 in. |
| March | 20.9 °F | 40.4 °F | 3.39 in. |
| April | 32.8 °F | 54.1 °F | 3.91 in. |
| May | 44.1 °F | 66.9 °F | 3.94 in. |
| June | 53.1 °F | 75.3 °F | 4.78 in. |
| July | 57.7 °F | 79.7 °F | 4.82 in. |
| August | 56.2 °F | 78.2 °F | 4.55 in. |
| September | 48.9 °F | 71.4 °F | 4.05 in. |
| October | 38.6 °F | 58.6 °F | 4.2 in. |
| November | 29.1 °F | 45.9 °F | 3.55 in. |
| December | 20.3 °F | 35.1 °F | 3.5 in. |
| Annual | 35.6 °F | 55.7 °F | 46.45 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| 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 |