Berkshire, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.7 °F (low) to 52.2 °F (high). Annual precipitation averages 47.1 Inches. Berkshire is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.2 °F | 24.2 °F | 3.27 in. |
| February | 8.9 °F | 26.8 °F | 2.56 in. |
| March | 18.8 °F | 36.3 °F | 3.04 in. |
| April | 32.5 °F | 50.7 °F | 3.56 in. |
| May | 44.1 °F | 64.8 °F | 4.29 in. |
| June | 53.0 °F | 73.2 °F | 4.56 in. |
| July | 57.1 °F | 77.1 °F | 5.31 in. |
| August | 55.8 °F | 75.9 °F | 4.78 in. |
| September | 48.5 °F | 68.6 °F | 4.29 in. |
| October | 37.8 °F | 55.3 °F | 4.52 in. |
| November | 27.1 °F | 42.7 °F | 3.34 in. |
| December | 15.1 °F | 30.8 °F | 3.56 in. |
| Annual | 33.7 °F | 52.2 °F | 47.08 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |