Walton, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 14.1 °C (high). Annual precipitation averages 1251.7 Millimeters. Walton 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 | -10.3 °C | -0.2 °C | 87.63 mm |
| February | -9.8 °C | 1.5 °C | 71.12 mm |
| March | -5.8 °C | 5.9 °C | 96.27 mm |
| April | 0.2 °C | 13.8 °C | 105.92 mm |
| May | 6.1 °C | 20.4 °C | 107.95 mm |
| June | 11.3 °C | 24.8 °C | 124.97 mm |
| July | 13.7 °C | 27.3 °C | 120.14 mm |
| August | 13.1 °C | 26.3 °C | 120.9 mm |
| September | 9.3 °C | 22.6 °C | 110.49 mm |
| October | 3.3 °C | 15.7 °C | 117.09 mm |
| November | -1.8 °C | 8.4 °C | 92.2 mm |
| December | -6.2 °C | 2.5 °C | 97.03 mm |
| Annual | 1.9 °C | 14.1 °C | 1251.71 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |