Brocton, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.5 °C (low) to 14.2 °C (high). Annual precipitation averages 1088.4 Millimeters. Brocton is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.3 °C | 1.1 °C | 76.71 mm |
| February | -6.4 °C | 1.7 °C | 57.66 mm |
| March | -2.9 °C | 5.8 °C | 72.9 mm |
| April | 2.9 °C | 13 °C | 86.36 mm |
| May | 9.3 °C | 19.3 °C | 89.92 mm |
| June | 14.9 °C | 24.4 °C | 90.42 mm |
| July | 17.5 °C | 26.4 °C | 98.3 mm |
| August | 16.9 °C | 25.8 °C | 88.39 mm |
| September | 13.3 °C | 22.6 °C | 109.22 mm |
| October | 7.5 °C | 16.2 °C | 118.87 mm |
| November | 2.1 °C | 9.7 °C | 106.68 mm |
| December | -2.4 °C | 3.9 °C | 92.96 mm |
| Annual | 5.5 °C | 14.2 °C | 1088.39 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |