Ross Corner, New Jersey has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.9 °C (low) to 15.9 °C (high). Annual precipitation averages 1171.2 Millimeters. Ross Corner 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.4 °C | 2.1 °C | 83.31 mm |
| February | -7.5 °C | 3.9 °C | 64.01 mm |
| March | -3.3 °C | 8.4 °C | 93.98 mm |
| April | 2.7 °C | 15.7 °C | 95.76 mm |
| May | 8.4 °C | 21.6 °C | 93.73 mm |
| June | 13.4 °C | 26 °C | 120.4 mm |
| July | 16.2 °C | 28.7 °C | 103.63 mm |
| August | 15.2 °C | 27.6 °C | 116.84 mm |
| September | 11 °C | 24.1 °C | 109.47 mm |
| October | 4.6 °C | 17.4 °C | 109.47 mm |
| November | -1 °C | 10.9 °C | 81.28 mm |
| December | -4.9 °C | 4.8 °C | 99.31 mm |
| Annual | 3.9 °C | 15.9 °C | 1171.19 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |