Browns Mills, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.9 °C (low) to 18.1 °C (high). Annual precipitation averages 1196.3 Millimeters. Browns Mills 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 | 5.3 °C | 91.44 mm |
| February | -3.9 °C | 6.8 °C | 70.36 mm |
| March | -0.1 °C | 10.9 °C | 111.25 mm |
| April | 5.3 °C | 17.6 °C | 83.31 mm |
| May | 10.8 °C | 22.7 °C | 97.28 mm |
| June | 15.9 °C | 27.7 °C | 108.2 mm |
| July | 18.9 °C | 30.3 °C | 122.17 mm |
| August | 18 °C | 29.3 °C | 123.44 mm |
| September | 14.2 °C | 25.8 °C | 99.57 mm |
| October | 7.7 °C | 19.6 °C | 100.33 mm |
| November | 2.2 °C | 13.6 °C | 81.53 mm |
| December | -1.8 °C | 8.1 °C | 107.44 mm |
| Annual | 6.9 °C | 18.1 °C | 1196.32 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 |