Cape May Court House, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 17.5 °C (high). Annual precipitation averages 1156.7 Millimeters. Cape May Court House 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 | -2.7 °C | 6.2 °C | 84.58 mm |
| February | -2.2 °C | 6.7 °C | 76.45 mm |
| March | 1.6 °C | 10.3 °C | 113.79 mm |
| April | 7.2 °C | 15.5 °C | 90.42 mm |
| May | 12.1 °C | 20.7 °C | 89.92 mm |
| June | 17.6 °C | 25.9 °C | 90.68 mm |
| July | 20.7 °C | 29.1 °C | 108.46 mm |
| August | 19.8 °C | 28.3 °C | 104.14 mm |
| September | 16.6 °C | 25.2 °C | 95.76 mm |
| October | 10 °C | 19.4 °C | 110.24 mm |
| November | 4.3 °C | 13.7 °C | 84.84 mm |
| December | 0.1 °C | 8.8 °C | 107.44 mm |
| Annual | 8.8 °C | 17.5 °C | 1156.72 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 |