Canton, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.3 °F (low) to 53.5 °F (high). Annual precipitation averages 50.2 Inches. Canton 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 | 8.2 °F | 26.7 °F | 3.48 in. |
| February | 9.4 °F | 29.7 °F | 3.16 in. |
| March | 19.0 °F | 38.4 °F | 3.71 in. |
| April | 30.9 °F | 51.5 °F | 4.3 in. |
| May | 42.0 °F | 64.6 °F | 3.95 in. |
| June | 51.4 °F | 72.9 °F | 5.29 in. |
| July | 56.8 °F | 78.3 °F | 4.07 in. |
| August | 54.9 °F | 77.3 °F | 4.1 in. |
| September | 47.0 °F | 69.9 °F | 3.65 in. |
| October | 36.6 °F | 56.5 °F | 5.65 in. |
| November | 27.0 °F | 43.9 °F | 4.38 in. |
| December | 16.4 °F | 32.7 °F | 4.45 in. |
| Annual | 33.3 °F | 53.5 °F | 50.19 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |