Nottingham, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.1 °C (low) to 14.4 °C (high). Annual precipitation averages 1180.1 Millimeters. Nottingham is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.4 °C | 0.3 °C | 83.57 mm |
| February | -8.7 °C | 1.9 °C | 80.52 mm |
| March | -4.2 °C | 6.2 °C | 99.57 mm |
| April | 1.4 °C | 13.6 °C | 100.08 mm |
| May | 7.2 °C | 19.7 °C | 96.27 mm |
| June | 12.6 °C | 24.8 °C | 108.46 mm |
| July | 15.7 °C | 27.8 °C | 95.76 mm |
| August | 14.7 °C | 27 °C | 97.28 mm |
| September | 10.4 °C | 23 °C | 95.76 mm |
| October | 4.4 °C | 15.9 °C | 119.13 mm |
| November | -0.8 °C | 9.4 °C | 95.5 mm |
| December | -5.9 °C | 3.3 °C | 108.2 mm |
| Annual | 3.1 °C | 14.4 °C | 1180.1 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| 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 |