Windsor, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3 °C (low) to 14.3 °C (high). Annual precipitation averages 1105.7 Millimeters. Windsor 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 | -9.3 °C | -0.2 °C | 73.15 mm |
| February | -8.8 °C | 1.2 °C | 60.2 mm |
| March | -4.9 °C | 6.1 °C | 82.55 mm |
| April | 1.1 °C | 13.9 °C | 94.23 mm |
| May | 7.3 °C | 20.7 °C | 95.76 mm |
| June | 12.4 °C | 25.4 °C | 112.52 mm |
| July | 14.9 °C | 27.4 °C | 107.95 mm |
| August | 14.2 °C | 26.7 °C | 109.98 mm |
| September | 10.4 °C | 22.8 °C | 106.43 mm |
| October | 4.3 °C | 16 °C | 102.87 mm |
| November | -0.8 °C | 8.4 °C | 79.25 mm |
| December | -5.2 °C | 2.8 °C | 80.77 mm |
| Annual | 3 °C | 14.3 °C | 1105.66 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 |