Harvey Cedars, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48 °F (low) to 60.7 °F (high). Annual precipitation averages 46.7 Inches. Harvey Cedars 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 | 27.6 °F | 41.1 °F | 3.73 in. |
| February | 28.5 °F | 42.2 °F | 3.07 in. |
| March | 34.5 °F | 47.5 °F | 4.6 in. |
| April | 44.0 °F | 56.6 °F | 3.42 in. |
| May | 52.8 °F | 65.3 °F | 3.43 in. |
| June | 62.9 °F | 74.9 °F | 3.87 in. |
| July | 69.0 °F | 80.9 °F | 4.29 in. |
| August | 68.9 °F | 80.0 °F | 4.75 in. |
| September | 63.0 °F | 74.4 °F | 3.54 in. |
| October | 51.1 °F | 64.5 °F | 4.3 in. |
| November | 41.3 °F | 54.8 °F | 3.36 in. |
| December | 32.7 °F | 46.2 °F | 4.37 in. |
| Annual | 48 °F | 60.7 °F | 46.73 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |