Wells, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.2 °C (low) to 12.8 °C (high). Annual precipitation averages 1264.9 Millimeters. Wells is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.4 °C | -1.7 °C | 98.81 mm |
| February | -11.7 °C | -0.3 °C | 82.04 mm |
| March | -7 °C | 4.3 °C | 104.39 mm |
| April | -0.4 °C | 12.4 °C | 108.2 mm |
| May | 6.3 °C | 19.5 °C | 104.9 mm |
| June | 11.4 °C | 23.8 °C | 124.46 mm |
| July | 14.2 °C | 26.3 °C | 109.98 mm |
| August | 13.2 °C | 25.3 °C | 104.14 mm |
| September | 9.3 °C | 21.4 °C | 100.33 mm |
| October | 2.9 °C | 14.3 °C | 117.86 mm |
| November | -2.6 °C | 7.1 °C | 99.31 mm |
| December | -8.3 °C | 1.1 °C | 110.49 mm |
| Annual | 1.2 °C | 12.8 °C | 1264.91 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |