Wolfeboro, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.3 °C (low) to 13.6 °C (high). Annual precipitation averages 1159.3 Millimeters. Wolfeboro is located in USDA Plant Hardiness Zone 5b. 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 | -10.9 °C | -1.2 °C | 80.77 mm |
| February | -10.5 °C | 0.5 °C | 81.53 mm |
| March | -5.8 °C | 5.4 °C | 93.98 mm |
| April | 0.4 °C | 12.9 °C | 96.27 mm |
| May | 6.7 °C | 20.2 °C | 91.69 mm |
| June | 12.1 °C | 24.9 °C | 102.36 mm |
| July | 15.2 °C | 27.7 °C | 104.14 mm |
| August | 14.3 °C | 26.6 °C | 92.46 mm |
| September | 10.1 °C | 22.1 °C | 86.36 mm |
| October | 3.9 °C | 14.6 °C | 120.14 mm |
| November | -1.4 °C | 7.8 °C | 97.28 mm |
| December | -6.7 °C | 1.9 °C | 112.27 mm |
| Annual | 2.3 °C | 13.6 °C | 1159.25 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |