Paulsboro, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48 °F (low) to 64.6 °F (high). Annual precipitation averages 46.5 Inches. Paulsboro is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.9 °F | 41.3 °F | 3.57 in. |
| February | 28.2 °F | 43.8 °F | 2.83 in. |
| March | 35.0 °F | 51.5 °F | 4.37 in. |
| April | 45.4 °F | 63.8 °F | 3.54 in. |
| May | 54.8 °F | 73.4 °F | 3.68 in. |
| June | 64.3 °F | 82.6 °F | 4.22 in. |
| July | 69.8 °F | 86.9 °F | 4.55 in. |
| August | 68.3 °F | 85.1 °F | 4.6 in. |
| September | 61.6 °F | 78.5 °F | 4.15 in. |
| October | 49.8 °F | 66.7 °F | 3.82 in. |
| November | 39.6 °F | 55.8 °F | 3.03 in. |
| December | 32.1 °F | 46.1 °F | 4.15 in. |
| Annual | 48 °F | 64.6 °F | 46.51 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |