Whitesboro, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.6 °F (low) to 63.3 °F (high). Annual precipitation averages 45 Inches. Whitesboro 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 | 28.2 °F | 43.2 °F | 3.3 in. |
| February | 29.1 °F | 44.3 °F | 2.93 in. |
| March | 35.7 °F | 50.8 °F | 4.46 in. |
| April | 45.6 °F | 59.6 °F | 3.55 in. |
| May | 54.5 °F | 68.8 °F | 3.54 in. |
| June | 64.3 °F | 78.0 °F | 3.51 in. |
| July | 69.8 °F | 84.2 °F | 4.17 in. |
| August | 68.5 °F | 82.6 °F | 3.94 in. |
| September | 62.4 °F | 77.1 °F | 3.67 in. |
| October | 51.0 °F | 66.7 °F | 4.34 in. |
| November | 40.5 °F | 56.7 °F | 3.32 in. |
| December | 33.1 °F | 48.0 °F | 4.22 in. |
| Annual | 48.6 °F | 63.3 °F | 44.95 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |