Allenwood, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.2 °F (low) to 62.3 °F (high). Annual precipitation averages 49 Inches. Allenwood 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 | 24.2 °F | 40.5 °F | 3.9 in. |
| February | 25.7 °F | 42.6 °F | 2.99 in. |
| March | 32.5 °F | 49.1 °F | 4.33 in. |
| April | 42.2 °F | 59.7 °F | 3.93 in. |
| May | 51.7 °F | 69.0 °F | 3.7 in. |
| June | 60.9 °F | 78.7 °F | 4.64 in. |
| July | 66.9 °F | 83.5 °F | 4.32 in. |
| August | 65.5 °F | 82.0 °F | 4.51 in. |
| September | 59.1 °F | 75.9 °F | 3.92 in. |
| October | 47.4 °F | 65.2 °F | 4.37 in. |
| November | 37.0 °F | 55.3 °F | 3.69 in. |
| December | 29.4 °F | 46.0 °F | 4.73 in. |
| Annual | 45.2 °F | 62.3 °F | 49.03 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 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |