Constableville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.5 °C (low) to 11.8 °C (high). Annual precipitation averages 1337.8 Millimeters. Constableville is located in USDA Plant Hardiness Zone 4b. 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 | -13.6 °C | -3.1 °C | 114.81 mm |
| February | -12.9 °C | -1.7 °C | 86.36 mm |
| March | -8.1 °C | 3 °C | 89.15 mm |
| April | -0.8 °C | 10.8 °C | 100.84 mm |
| May | 5.7 °C | 18.6 °C | 109.73 mm |
| June | 10.7 °C | 22.9 °C | 116.59 mm |
| July | 13.2 °C | 25.4 °C | 108.71 mm |
| August | 12.3 °C | 24.8 °C | 113.03 mm |
| September | 8.3 °C | 20.7 °C | 117.09 mm |
| October | 2.9 °C | 13.4 °C | 143.26 mm |
| November | -2.8 °C | 6.3 °C | 115.57 mm |
| December | -8.8 °C | 0.1 °C | 122.68 mm |
| Annual | 0.5 °C | 11.8 °C | 1337.82 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°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 |