Highland Lakes, New Jersey has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.7 °F (low) to 58.1 °F (high). Annual precipitation averages 51.2 Inches. Highland Lakes is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.1 °F | 33.1 °F | 3.8 in. |
| February | 18.7 °F | 36.1 °F | 2.98 in. |
| March | 25.9 °F | 43.6 °F | 4.53 in. |
| April | 37.6 °F | 57.4 °F | 3.88 in. |
| May | 47.7 °F | 68.3 °F | 3.92 in. |
| June | 56.8 °F | 76.4 °F | 5.04 in. |
| July | 61.5 °F | 81.4 °F | 4.42 in. |
| August | 60.4 °F | 79.5 °F | 4.99 in. |
| September | 52.9 °F | 73.1 °F | 4.87 in. |
| October | 42.2 °F | 61.1 °F | 4.5 in. |
| November | 32.0 °F | 49.2 °F | 3.71 in. |
| December | 23.6 °F | 38.2 °F | 4.56 in. |
| Annual | 39.7 °F | 58.1 °F | 51.2 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |