Dennisville, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.9 °F (low) to 64.2 °F (high). Annual precipitation averages 47.2 Inches. Dennisville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.2 °F | 42.5 °F | 3.33 in. |
| February | 26.1 °F | 44.3 °F | 3.1 in. |
| March | 33.1 °F | 51.0 °F | 4.54 in. |
| April | 43.0 °F | 62.5 °F | 3.63 in. |
| May | 52.5 °F | 71.5 °F | 3.49 in. |
| June | 62.0 °F | 80.7 °F | 3.74 in. |
| July | 67.6 °F | 85.2 °F | 4.62 in. |
| August | 65.8 °F | 83.7 °F | 4.76 in. |
| September | 59.5 °F | 78.1 °F | 4.06 in. |
| October | 48.3 °F | 67.4 °F | 4.34 in. |
| November | 37.7 °F | 56.5 °F | 3.4 in. |
| December | 30.2 °F | 47.4 °F | 4.2 in. |
| Annual | 45.9 °F | 64.2 °F | 47.21 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |