Callicoon, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.6 °C (low) to 15.1 °C (high). Annual precipitation averages 1202.9 Millimeters. Callicoon is located in USDA Plant Hardiness Zone 6a. 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 | -9.7 °C | 0.8 °C | 84.84 mm |
| February | -8.8 °C | 2.5 °C | 64.77 mm |
| March | -4.7 °C | 7.1 °C | 86.87 mm |
| April | 0.9 °C | 14.9 °C | 97.28 mm |
| May | 6.7 °C | 21.4 °C | 104.9 mm |
| June | 12.1 °C | 25.7 °C | 127.51 mm |
| July | 14.7 °C | 28.2 °C | 117.09 mm |
| August | 13.7 °C | 27.2 °C | 107.44 mm |
| September | 9.8 °C | 23.4 °C | 117.6 mm |
| October | 3.5 °C | 16.9 °C | 115.32 mm |
| November | -1.6 °C | 9.6 °C | 82.55 mm |
| December | -5.8 °C | 3.3 °C | 96.77 mm |
| Annual | 2.6 °C | 15.1 °C | 1202.94 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |