Greentree, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 46.4 °F (low) to 64.5 °F (high). Annual precipitation averages 47.4 Inches. Greentree is located in USDA Plant Hardiness Zone 7b. 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 | 25.6 °F | 41.1 °F | 3.62 in. |
| February | 26.9 °F | 43.9 °F | 2.82 in. |
| March | 33.7 °F | 51.7 °F | 4.52 in. |
| April | 43.7 °F | 63.9 °F | 3.49 in. |
| May | 53.3 °F | 73.3 °F | 3.87 in. |
| June | 62.6 °F | 82.6 °F | 4.22 in. |
| July | 68.2 °F | 86.8 °F | 4.79 in. |
| August | 66.5 °F | 84.9 °F | 4.86 in. |
| September | 59.7 °F | 78.4 °F | 4.0 in. |
| October | 48.0 °F | 66.2 °F | 3.86 in. |
| November | 37.9 °F | 55.8 °F | 3.12 in. |
| December | 30.6 °F | 45.9 °F | 4.2 in. |
| Annual | 46.4 °F | 64.5 °F | 47.37 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |