Kenilworth, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.2 °C (low) to 17.8 °C (high). Annual precipitation averages 1229.6 Millimeters. Kenilworth is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °C | 4.4 °C | 89.92 mm |
| February | -3.8 °C | 5.9 °C | 73.41 mm |
| March | 0 °C | 10.4 °C | 105.92 mm |
| April | 5.7 °C | 17.2 °C | 99.06 mm |
| May | 11.1 °C | 22.7 °C | 102.87 mm |
| June | 16.3 °C | 27.7 °C | 114.3 mm |
| July | 19.3 °C | 30.5 °C | 121.92 mm |
| August | 18.5 °C | 29.5 °C | 114.3 mm |
| September | 14.6 °C | 25.7 °C | 107.19 mm |
| October | 7.9 °C | 19 °C | 111 mm |
| November | 2.5 °C | 12.8 °C | 85.85 mm |
| December | -1.4 °C | 7.2 °C | 103.89 mm |
| Annual | 7.2 °C | 17.8 °C | 1229.63 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |