Goshen, 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 11.8 °C (high). Annual precipitation averages 1353.1 Millimeters. Goshen is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.1 °C | -2.2 °C | 89.92 mm |
| February | -10.4 °C | -0.6 °C | 87.38 mm |
| March | -6.3 °C | 3.7 °C | 102.11 mm |
| April | -0.2 °C | 10.8 °C | 109.73 mm |
| May | 6.1 °C | 17.7 °C | 102.62 mm |
| June | 11.6 °C | 22.3 °C | 122.43 mm |
| July | 14.5 °C | 24.8 °C | 126.24 mm |
| August | 13.2 °C | 24.1 °C | 109.22 mm |
| September | 9.2 °C | 20.3 °C | 118.11 mm |
| October | 3.6 °C | 13.2 °C | 153.42 mm |
| November | -2.1 °C | 6.7 °C | 110.49 mm |
| December | -6.9 °C | 0.8 °C | 121.41 mm |
| Annual | 1.8 °C | 11.8 °C | 1353.08 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |