Island Heights, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.5 °C (low) to 17 °C (high). Annual precipitation averages 1262.6 Millimeters. Island Heights 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 | -4.1 °C | 4.9 °C | 100.58 mm |
| February | -3.4 °C | 6.1 °C | 80.77 mm |
| March | 0.3 °C | 9.5 °C | 125.98 mm |
| April | 5.7 °C | 15.6 °C | 89.92 mm |
| May | 10.8 °C | 20.7 °C | 93.47 mm |
| June | 16.2 °C | 26.1 °C | 107.19 mm |
| July | 19.4 °C | 28.8 °C | 119.63 mm |
| August | 18.9 °C | 27.9 °C | 124.21 mm |
| September | 15.4 °C | 24.6 °C | 94.23 mm |
| October | 8.8 °C | 18.7 °C | 110.74 mm |
| November | 3.1 °C | 13.1 °C | 94.49 mm |
| December | -1.2 °C | 8.1 °C | 121.41 mm |
| Annual | 7.5 °C | 17 °C | 1262.62 mm |
| 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 : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |