Bordentown, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.3 °F (low) to 64.4 °F (high). Annual precipitation averages 47.4 Inches. Bordentown is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.5 °F | 41.0 °F | 3.53 in. |
| February | 25.9 °F | 43.7 °F | 2.69 in. |
| March | 32.7 °F | 51.4 °F | 4.34 in. |
| April | 42.6 °F | 63.4 °F | 3.51 in. |
| May | 52.3 °F | 72.9 °F | 3.95 in. |
| June | 61.6 °F | 82.0 °F | 4.36 in. |
| July | 67.0 °F | 86.5 °F | 4.93 in. |
| August | 65.4 °F | 84.9 °F | 4.65 in. |
| September | 58.4 °F | 78.5 °F | 3.99 in. |
| October | 46.7 °F | 66.6 °F | 3.89 in. |
| November | 36.6 °F | 56.0 °F | 3.26 in. |
| December | 29.3 °F | 45.8 °F | 4.28 in. |
| Annual | 45.3 °F | 64.4 °F | 47.38 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |