Finesville, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.5 °C (low) to 17.2 °C (high). Annual precipitation averages 1287.3 Millimeters. Finesville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.2 °C | 3.5 °C | 88.9 mm |
| February | -5.4 °C | 5.1 °C | 77.22 mm |
| March | -1.5 °C | 10 °C | 102.62 mm |
| April | 4.1 °C | 16.9 °C | 100.84 mm |
| May | 9.7 °C | 22.5 °C | 106.17 mm |
| June | 14.9 °C | 27.3 °C | 121.67 mm |
| July | 17.6 °C | 29.8 °C | 129.03 mm |
| August | 16.6 °C | 28.8 °C | 123.44 mm |
| September | 12.4 °C | 25.1 °C | 122.68 mm |
| October | 6.2 °C | 18.6 °C | 117.09 mm |
| November | 0.8 °C | 12.3 °C | 87.63 mm |
| December | -3.2 °C | 6.2 °C | 109.98 mm |
| Annual | 5.5 °C | 17.2 °C | 1287.27 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |