Constable, 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 12.4 °C (high). Annual precipitation averages 1019.6 Millimeters. Constable 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 | -13.5 °C | -3.9 °C | 65.28 mm |
| February | -12.7 °C | -2.3 °C | 53.09 mm |
| March | -6.6 °C | 3.2 °C | 59.94 mm |
| April | 0.9 °C | 11.9 °C | 80.77 mm |
| May | 7.5 °C | 19.6 °C | 86.61 mm |
| June | 13.2 °C | 24.7 °C | 111.51 mm |
| July | 15.6 °C | 26.8 °C | 103.12 mm |
| August | 14.4 °C | 26.1 °C | 106.68 mm |
| September | 10.1 °C | 21.9 °C | 90.93 mm |
| October | 3.9 °C | 14.4 °C | 102.62 mm |
| November | -1.7 °C | 6.9 °C | 77.98 mm |
| December | -8.4 °C | 0 °C | 81.03 mm |
| Annual | 1.9 °C | 12.4 °C | 1019.56 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 |