Cookstown, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7 °C (low) to 17.9 °C (high). Annual precipitation averages 1200.4 Millimeters. Cookstown 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 | -4.5 °C | 4.9 °C | 91.44 mm |
| February | -3.8 °C | 6.4 °C | 70.1 mm |
| March | 0.1 °C | 10.6 °C | 111.25 mm |
| April | 5.6 °C | 17.2 °C | 86.61 mm |
| May | 10.9 °C | 22.6 °C | 97.54 mm |
| June | 16 °C | 27.7 °C | 107.7 mm |
| July | 19.1 °C | 30.1 °C | 122.43 mm |
| August | 18.2 °C | 29.2 °C | 121.67 mm |
| September | 14.2 °C | 25.6 °C | 100.33 mm |
| October | 7.8 °C | 19.2 °C | 100.08 mm |
| November | 2.2 °C | 13.4 °C | 82.55 mm |
| December | -1.9 °C | 7.8 °C | 108.71 mm |
| Annual | 7 °C | 17.9 °C | 1200.41 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 |