Newbury, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.3 °F (low) to 56.5 °F (high). Annual precipitation averages 37.2 Inches. Newbury is located in USDA Plant Hardiness Zone 4b. 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 | 7.0 °F | 29.2 °F | 2.32 in. |
| February | 7.0 °F | 32.5 °F | 1.94 in. |
| March | 17.6 °F | 41.5 °F | 2.39 in. |
| April | 29.8 °F | 55.3 °F | 2.69 in. |
| May | 41.6 °F | 68.3 °F | 3.22 in. |
| June | 50.7 °F | 76.7 °F | 4.04 in. |
| July | 56.6 °F | 81.8 °F | 3.93 in. |
| August | 54.4 °F | 80.4 °F | 3.83 in. |
| September | 46.9 °F | 72.9 °F | 3.49 in. |
| October | 35.0 °F | 58.9 °F | 3.93 in. |
| November | 25.6 °F | 46.2 °F | 2.65 in. |
| December | 15.3 °F | 34.8 °F | 2.76 in. |
| Annual | 32.3 °F | 56.5 °F | 37.19 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |