Shaftsbury, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.8 °F (low) to 55.7 °F (high). Annual precipitation averages 49.1 Inches. 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 | 11.8 °F | 30.2 °F | 3.54 in. |
| February | 12.7 °F | 32.8 °F | 2.66 in. |
| March | 20.8 °F | 41.1 °F | 3.44 in. |
| April | 32.6 °F | 54.8 °F | 3.95 in. |
| May | 43.6 °F | 66.7 °F | 4.05 in. |
| June | 52.3 °F | 74.8 °F | 4.88 in. |
| July | 56.8 °F | 79.1 °F | 4.93 in. |
| August | 55.1 °F | 77.6 °F | 4.63 in. |
| September | 47.5 °F | 70.8 °F | 4.16 in. |
| October | 37.5 °F | 58.2 °F | 4.71 in. |
| November | 28.1 °F | 46.2 °F | 3.84 in. |
| December | 18.8 °F | 35.6 °F | 4.29 in. |
| Annual | 34.8 °F | 55.7 °F | 49.08 in. |
| 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 : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |