Marlboro, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.3 °F (low) to 64.5 °F (high). Annual precipitation averages 44.6 Inches. Marlboro 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 | 25.4 °F | 41.7 °F | 3.3 in. |
| February | 26.7 °F | 43.9 °F | 2.83 in. |
| March | 33.6 °F | 51.5 °F | 4.01 in. |
| April | 43.6 °F | 63.5 °F | 3.42 in. |
| May | 53.4 °F | 73.0 °F | 3.55 in. |
| June | 62.8 °F | 82.0 °F | 4.35 in. |
| July | 68.2 °F | 86.2 °F | 4.48 in. |
| August | 66.3 °F | 84.2 °F | 4.26 in. |
| September | 59.6 °F | 78.5 °F | 3.93 in. |
| October | 47.8 °F | 67.1 °F | 3.67 in. |
| November | 37.8 °F | 56.1 °F | 2.97 in. |
| December | 30.4 °F | 46.4 °F | 3.84 in. |
| Annual | 46.3 °F | 64.5 °F | 44.61 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |