South Hooksett, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.6 °C (low) to 14.3 °C (high). Annual precipitation averages 1108.5 Millimeters. South Hooksett is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.6 °C | 0.2 °C | 72.64 mm |
| February | -9.5 °C | 1.8 °C | 72.64 mm |
| March | -5.1 °C | 6.3 °C | 86.36 mm |
| April | 1 °C | 13.6 °C | 90.17 mm |
| May | 7.1 °C | 20 °C | 90.17 mm |
| June | 12.4 °C | 24.9 °C | 108.97 mm |
| July | 15.4 °C | 27.7 °C | 95 mm |
| August | 14.5 °C | 26.9 °C | 94.74 mm |
| September | 10.4 °C | 22.9 °C | 95.76 mm |
| October | 3.8 °C | 15.4 °C | 112.78 mm |
| November | -1.6 °C | 9.2 °C | 89.41 mm |
| December | -6.8 °C | 3.2 °C | 99.82 mm |
| Annual | 2.6 °C | 14.3 °C | 1108.46 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |