Sherrill, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.4 °C (low) to 13.8 °C (high). Annual precipitation averages 1110.2 Millimeters. Sherrill is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.9 °C | -0.8 °C | 70.1 mm |
| February | -9.5 °C | 0.3 °C | 64.52 mm |
| March | -4.8 °C | 4.9 °C | 78.23 mm |
| April | 1.7 °C | 13.1 °C | 87.63 mm |
| May | 8.1 °C | 20.4 °C | 97.79 mm |
| June | 13.3 °C | 24.9 °C | 112.27 mm |
| July | 16.1 °C | 27.5 °C | 106.17 mm |
| August | 15.2 °C | 26.6 °C | 106.93 mm |
| September | 11.2 °C | 22.7 °C | 98.81 mm |
| October | 5.3 °C | 15.4 °C | 115.57 mm |
| November | -0.1 °C | 8.6 °C | 85.6 mm |
| December | -5.5 °C | 2.3 °C | 86.61 mm |
| Annual | 3.4 °C | 13.8 °C | 1110.23 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |