Canton, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 61.7 °F (high). Annual precipitation averages 40 Inches. Canton is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.5 °F | 32.6 °F | 1.76 in. |
| February | 19.0 °F | 37.3 °F | 1.96 in. |
| March | 29.1 °F | 49.9 °F | 2.52 in. |
| April | 39.8 °F | 62.8 °F | 4.08 in. |
| May | 51.8 °F | 73.4 °F | 5.39 in. |
| June | 61.4 °F | 82.3 °F | 4.75 in. |
| July | 64.4 °F | 85.4 °F | 4.14 in. |
| August | 62.2 °F | 83.9 °F | 3.49 in. |
| September | 54.0 °F | 78.3 °F | 3.65 in. |
| October | 42.2 °F | 65.6 °F | 3.03 in. |
| November | 30.9 °F | 50.4 °F | 2.91 in. |
| December | 21.4 °F | 37.9 °F | 2.27 in. |
| Annual | 41 °F | 61.7 °F | 39.95 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |