Sheffield, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.1 °C (low) to 11.3 °C (high). Annual precipitation averages 1123.4 Millimeters. Sheffield is located in USDA Plant Hardiness Zone 4a. 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 | -16.3 °C | -4.2 °C | 75.18 mm |
| February | -15.7 °C | -2.4 °C | 66.04 mm |
| March | -9.9 °C | 2.8 °C | 73.66 mm |
| April | -2 °C | 10.5 °C | 89.66 mm |
| May | 4.6 °C | 18.1 °C | 102.62 mm |
| June | 9.6 °C | 22.9 °C | 107.95 mm |
| July | 12.3 °C | 25.5 °C | 112.52 mm |
| August | 11.3 °C | 24.8 °C | 108.46 mm |
| September | 7.3 °C | 20.5 °C | 91.44 mm |
| October | 1.3 °C | 12.8 °C | 114.3 mm |
| November | -4.5 °C | 5.5 °C | 82.04 mm |
| December | -10.9 °C | -0.9 °C | 99.57 mm |
| Annual | -1.1 °C | 11.3 °C | 1123.44 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 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |