Pine Brook, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.2 °F (low) to 62.7 °F (high). Annual precipitation averages 49.1 Inches. Pine Brook 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 | 21.9 °F | 38.5 °F | 3.69 in. |
| February | 23.1 °F | 41.2 °F | 2.77 in. |
| March | 30.3 °F | 49.4 °F | 4.19 in. |
| April | 40.8 °F | 61.7 °F | 4.06 in. |
| May | 50.7 °F | 71.9 °F | 4.01 in. |
| June | 60.1 °F | 80.7 °F | 4.81 in. |
| July | 65.3 °F | 85.8 °F | 4.33 in. |
| August | 63.3 °F | 83.9 °F | 4.58 in. |
| September | 56.0 °F | 77.2 °F | 4.29 in. |
| October | 44.2 °F | 65.1 °F | 4.43 in. |
| November | 34.8 °F | 53.8 °F | 3.6 in. |
| December | 27.6 °F | 43.5 °F | 4.31 in. |
| Annual | 43.2 °F | 62.7 °F | 49.07 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |