Canton, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.8 °F (low) to 60.1 °F (high). Annual precipitation averages 50.3 Inches. Canton 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 | 19.1 °F | 36.7 °F | 4.1 in. |
| February | 20.4 °F | 39.0 °F | 3.53 in. |
| March | 27.8 °F | 46.1 °F | 4.99 in. |
| April | 37.8 °F | 58.0 °F | 4.51 in. |
| May | 47.5 °F | 68.5 °F | 3.63 in. |
| June | 56.9 °F | 77.2 °F | 4.12 in. |
| July | 63.0 °F | 83.0 °F | 3.64 in. |
| August | 61.5 °F | 81.5 °F | 3.83 in. |
| September | 54.2 °F | 74.4 °F | 3.88 in. |
| October | 42.9 °F | 62.6 °F | 4.96 in. |
| November | 33.6 °F | 52.0 °F | 4.24 in. |
| December | 25.2 °F | 42.1 °F | 4.91 in. |
| Annual | 40.8 °F | 60.1 °F | 50.34 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |