Barker, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.3 °C (low) to 13.9 °C (high). Annual precipitation averages 844.8 Millimeters. Barker 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 | -6.7 °C | 0.5 °C | 68.33 mm |
| February | -6.3 °C | 1.4 °C | 58.67 mm |
| March | -2.9 °C | 5.6 °C | 56.39 mm |
| April | 2.4 °C | 12.1 °C | 71.63 mm |
| May | 8.3 °C | 19.3 °C | 66.55 mm |
| June | 14.3 °C | 24.1 °C | 70.36 mm |
| July | 17.6 °C | 26.8 °C | 74.93 mm |
| August | 17 °C | 26.2 °C | 73.91 mm |
| September | 13.3 °C | 22.5 °C | 81.53 mm |
| October | 7.2 °C | 15.6 °C | 84.07 mm |
| November | 1.8 °C | 9.3 °C | 67.56 mm |
| December | -3 °C | 3.6 °C | 70.87 mm |
| Annual | 5.3 °C | 13.9 °C | 844.8 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 |