Brushton, 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 1019.1 Millimeters. Brushton 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 | -13.4 °C | -3.6 °C | 68.58 mm |
| February | -12.6 °C | -2.1 °C | 55.12 mm |
| March | -6.7 °C | 3.3 °C | 62.74 mm |
| April | 0.8 °C | 11.7 °C | 83.57 mm |
| May | 7.6 °C | 19.6 °C | 86.11 mm |
| June | 13 °C | 24.3 °C | 106.93 mm |
| July | 15.5 °C | 26.7 °C | 102.11 mm |
| August | 14.4 °C | 25.8 °C | 95 mm |
| September | 10 °C | 21.8 °C | 95.76 mm |
| October | 4.1 °C | 14.3 °C | 106.17 mm |
| November | -1.7 °C | 7.2 °C | 80.52 mm |
| December | -8.3 °C | 0.2 °C | 76.45 mm |
| Annual | 1.9 °C | 12.4 °C | 1019.06 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 |