Stone Harbor, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 17.2 °C (high). Annual precipitation averages 1146.6 Millimeters. Stone Harbor is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2 °C | 6.1 °C | 85.09 mm |
| February | -1.5 °C | 6.7 °C | 72.64 mm |
| March | 2.1 °C | 10.3 °C | 112.78 mm |
| April | 7.6 °C | 14.7 °C | 89.41 mm |
| May | 12.3 °C | 19.7 °C | 89.15 mm |
| June | 17.9 °C | 24.9 °C | 90.93 mm |
| July | 21.1 °C | 28.9 °C | 108.46 mm |
| August | 20.4 °C | 28.1 °C | 106.68 mm |
| September | 17.2 °C | 25 °C | 89.92 mm |
| October | 10.8 °C | 19.2 °C | 109.73 mm |
| November | 5.1 °C | 13.4 °C | 84.58 mm |
| December | 0.9 °C | 8.8 °C | 107.19 mm |
| Annual | 9.3 °C | 17.2 °C | 1146.56 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |