Shaftsbury, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.6 °C (low) to 13.2 °C (high). Annual precipitation averages 1246.6 Millimeters. Shaftsbury is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.2 °C | -1 °C | 89.92 mm |
| February | -10.7 °C | 0.4 °C | 67.56 mm |
| March | -6.2 °C | 5.1 °C | 87.38 mm |
| April | 0.3 °C | 12.7 °C | 100.33 mm |
| May | 6.4 °C | 19.3 °C | 102.87 mm |
| June | 11.3 °C | 23.8 °C | 123.95 mm |
| July | 13.8 °C | 26.2 °C | 125.22 mm |
| August | 12.8 °C | 25.3 °C | 117.6 mm |
| September | 8.6 °C | 21.6 °C | 105.66 mm |
| October | 3.1 °C | 14.6 °C | 119.63 mm |
| November | -2.2 °C | 7.9 °C | 97.54 mm |
| December | -7.3 °C | 2 °C | 108.97 mm |
| Annual | 1.6 °C | 13.2 °C | 1246.63 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |