Goshen, Connecticut has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.3 °C (low) to 14 °C (high). Annual precipitation averages 1320.8 Millimeters. Goshen 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 | -9.4 °C | 0 °C | 92.2 mm |
| February | -8.3 °C | 1.7 °C | 77.72 mm |
| March | -4.4 °C | 6 °C | 105.66 mm |
| April | 1.9 °C | 13.8 °C | 100.08 mm |
| May | 7.8 °C | 19.8 °C | 103.38 mm |
| June | 12.9 °C | 24.4 °C | 124.71 mm |
| July | 15.1 °C | 27.1 °C | 123.19 mm |
| August | 14.3 °C | 26.1 °C | 121.16 mm |
| September | 10.6 °C | 21.9 °C | 125.22 mm |
| October | 4.9 °C | 15.5 °C | 135.64 mm |
| November | -0.6 °C | 8.7 °C | 98.3 mm |
| December | -5.6 °C | 2.6 °C | 113.54 mm |
| Annual | 3.3 °C | 14 °C | 1320.8 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |