Ruby, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4 °C (low) to 16 °C (high). Annual precipitation averages 1205.2 Millimeters. Ruby is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.5 °C | 1.8 °C | 85.85 mm |
| February | -7.6 °C | 3.4 °C | 69.6 mm |
| March | -3.3 °C | 8.2 °C | 93.47 mm |
| April | 2.7 °C | 15.8 °C | 95.76 mm |
| May | 8.6 °C | 22.2 °C | 93.73 mm |
| June | 13.6 °C | 26.7 °C | 114.05 mm |
| July | 16.2 °C | 29.2 °C | 115.32 mm |
| August | 15.5 °C | 28 °C | 110.24 mm |
| September | 11.1 °C | 24.1 °C | 115.57 mm |
| October | 5 °C | 17.1 °C | 120.9 mm |
| November | -0.3 °C | 10.6 °C | 87.63 mm |
| December | -4.8 °C | 4.4 °C | 103.12 mm |
| Annual | 4 °C | 16 °C | 1205.24 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |