Watchtower, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.4 °C (low) to 16 °C (high). Annual precipitation averages 1193.5 Millimeters. Watchtower is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8 °C | 1.9 °C | 85.6 mm |
| February | -7.1 °C | 3.6 °C | 69.34 mm |
| March | -2.7 °C | 8.2 °C | 95.5 mm |
| April | 3.3 °C | 15.7 °C | 95.25 mm |
| May | 8.8 °C | 21.6 °C | 92.2 mm |
| June | 13.8 °C | 26.4 °C | 115.06 mm |
| July | 16.6 °C | 29.2 °C | 109.98 mm |
| August | 15.7 °C | 28.2 °C | 110.74 mm |
| September | 11.4 °C | 24.2 °C | 113.54 mm |
| October | 5.2 °C | 17.3 °C | 114.3 mm |
| November | -0.2 °C | 10.7 °C | 88.65 mm |
| December | -4.6 °C | 4.6 °C | 103.38 mm |
| Annual | 4.4 °C | 16 °C | 1193.54 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |