Marlton, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.4 °C (low) to 18 °C (high). Annual precipitation averages 1201.9 Millimeters. Marlton 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 | -4.1 °C | 5 °C | 92.2 mm |
| February | -3.4 °C | 6.5 °C | 71.63 mm |
| March | 0.4 °C | 10.9 °C | 114.55 mm |
| April | 5.9 °C | 17.6 °C | 88.39 mm |
| May | 11.3 °C | 22.9 °C | 97.79 mm |
| June | 16.4 °C | 28.1 °C | 106.68 mm |
| July | 19.6 °C | 30.3 °C | 122.17 mm |
| August | 18.6 °C | 29.3 °C | 123.19 mm |
| September | 14.8 °C | 25.8 °C | 100.84 mm |
| October | 8.3 °C | 19.1 °C | 98.3 mm |
| November | 2.7 °C | 13.3 °C | 79.5 mm |
| December | -1.3 °C | 7.7 °C | 106.68 mm |
| Annual | 7.4 °C | 18 °C | 1201.92 mm |
| 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 : -15°C to -12.2°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 |