Brownville, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.5 °F (low) to 63.6 °F (high). Annual precipitation averages 48.3 Inches. Brownville 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 | 23.7 °F | 40.4 °F | 3.69 in. |
| February | 25.2 °F | 42.9 °F | 2.88 in. |
| March | 32.0 °F | 50.5 °F | 4.26 in. |
| April | 41.8 °F | 62.3 °F | 3.84 in. |
| May | 51.5 °F | 71.9 °F | 3.85 in. |
| June | 60.6 °F | 81.1 °F | 4.49 in. |
| July | 66.2 °F | 85.8 °F | 4.65 in. |
| August | 64.5 °F | 84.1 °F | 4.45 in. |
| September | 57.6 °F | 77.5 °F | 4.14 in. |
| October | 46.0 °F | 65.8 °F | 4.22 in. |
| November | 36.2 °F | 55.6 °F | 3.39 in. |
| December | 29.0 °F | 45.5 °F | 4.39 in. |
| Annual | 44.5 °F | 63.6 °F | 48.25 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |