Sutton, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.8 °F (low) to 57.7 °F (high). Annual precipitation averages 50.1 Inches. Sutton is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.3 °F | 33.9 °F | 3.88 in. |
| February | 18.6 °F | 36.4 °F | 3.48 in. |
| March | 26.2 °F | 43.9 °F | 4.72 in. |
| April | 36.8 °F | 56.2 °F | 4.51 in. |
| May | 47.2 °F | 66.9 °F | 3.58 in. |
| June | 56.5 °F | 75.1 °F | 4.21 in. |
| July | 62.2 °F | 80.4 °F | 3.87 in. |
| August | 60.8 °F | 78.8 °F | 4.11 in. |
| September | 53.7 °F | 72.0 °F | 4.01 in. |
| October | 42.4 °F | 60.1 °F | 5.0 in. |
| November | 32.5 °F | 49.5 °F | 3.86 in. |
| December | 23.8 °F | 39.2 °F | 4.83 in. |
| Annual | 39.8 °F | 57.7 °F | 50.06 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |