Heislerville, New Jersey has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.7 °F (low) to 63.4 °F (high). Annual precipitation averages 45.9 Inches. Heislerville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.0 °F | 42.0 °F | 3.32 in. |
| February | 27.8 °F | 43.4 °F | 3.0 in. |
| March | 34.4 °F | 50.5 °F | 4.34 in. |
| April | 44.5 °F | 61.4 °F | 3.49 in. |
| May | 53.7 °F | 70.4 °F | 3.56 in. |
| June | 63.4 °F | 79.9 °F | 3.88 in. |
| July | 69.0 °F | 84.3 °F | 4.49 in. |
| August | 67.3 °F | 82.8 °F | 4.6 in. |
| September | 61.7 °F | 77.0 °F | 3.88 in. |
| October | 50.6 °F | 66.6 °F | 4.03 in. |
| November | 40.1 °F | 55.8 °F | 3.2 in. |
| December | 32.3 °F | 46.7 °F | 4.07 in. |
| Annual | 47.7 °F | 63.4 °F | 45.86 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |