Newark Valley, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.5 °C (low) to 14.1 °C (high). Annual precipitation averages 1101.4 Millimeters. Newark Valley 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 | -9.7 °C | -0.2 °C | 72.14 mm |
| February | -9.2 °C | 1.3 °C | 62.99 mm |
| March | -5.3 °C | 5.8 °C | 82.04 mm |
| April | 0.8 °C | 13.4 °C | 95.25 mm |
| May | 6.9 °C | 20.3 °C | 92.71 mm |
| June | 12.1 °C | 24.8 °C | 117.09 mm |
| July | 14.5 °C | 27.1 °C | 101.35 mm |
| August | 13.8 °C | 26.6 °C | 109.22 mm |
| September | 9.8 °C | 22.6 °C | 108.46 mm |
| October | 3.8 °C | 15.6 °C | 97.54 mm |
| November | -1.3 °C | 8.6 °C | 82.3 mm |
| December | -5.7 °C | 2.8 °C | 80.26 mm |
| Annual | 2.5 °C | 14.1 °C | 1101.35 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |