Stoddard, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.8 °C (low) to 12.8 °C (high). Annual precipitation averages 1327.7 Millimeters. Stoddard is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.3 °C | -2.1 °C | 96.01 mm |
| February | -11.3 °C | -0.3 °C | 87.38 mm |
| March | -7.1 °C | 4.1 °C | 103.89 mm |
| April | 1.1 °C | 12.9 °C | 102.87 mm |
| May | 5.5 °C | 19.4 °C | 103.63 mm |
| June | 12.2 °C | 23.6 °C | 120.9 mm |
| July | 15.3 °C | 26.1 °C | 127.51 mm |
| August | 12.9 °C | 25.3 °C | 113.03 mm |
| September | 8.1 °C | 21.2 °C | 108.97 mm |
| October | 4.9 °C | 14.2 °C | 142.75 mm |
| November | -2.3 °C | 7.2 °C | 102.62 mm |
| December | -5.6 °C | 1.8 °C | 118.11 mm |
| Annual | 1.8 °C | 12.8 °C | 1327.67 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |