Paulsboro, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.9 °C (low) to 18.1 °C (high). Annual precipitation averages 1181.4 Millimeters. 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 | -2.8 °C | 5.2 °C | 90.68 mm |
| February | -2.1 °C | 6.6 °C | 71.88 mm |
| March | 1.7 °C | 10.8 °C | 111 mm |
| April | 7.4 °C | 17.7 °C | 89.92 mm |
| May | 12.7 °C | 23 °C | 93.47 mm |
| June | 17.9 °C | 28.1 °C | 107.19 mm |
| July | 21 °C | 30.5 °C | 115.57 mm |
| August | 20.2 °C | 29.5 °C | 116.84 mm |
| September | 16.4 °C | 25.8 °C | 105.41 mm |
| October | 9.9 °C | 19.3 °C | 97.03 mm |
| November | 4.2 °C | 13.2 °C | 76.96 mm |
| December | 0.1 °C | 7.8 °C | 105.41 mm |
| Annual | 8.9 °C | 18.1 °C | 1181.36 mm |
| 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 : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |