Canton, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.3 °C (low) to 14.2 °C (high). Annual precipitation averages 695.5 Millimeters. Canton is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.6 °C | -3.2 °C | 14.48 mm |
| February | -10.9 °C | -0.4 °C | 19.3 mm |
| March | -4.7 °C | 6.7 °C | 34.8 mm |
| April | 1.7 °C | 14.8 °C | 73.66 mm |
| May | 8.7 °C | 21.6 °C | 100.84 mm |
| June | 14.8 °C | 27.2 °C | 110.24 mm |
| July | 16.8 °C | 29.2 °C | 83.06 mm |
| August | 15.5 °C | 27.8 °C | 79.76 mm |
| September | 10.3 °C | 24.2 °C | 66.55 mm |
| October | 3.1 °C | 16.4 °C | 60.71 mm |
| November | -4.3 °C | 7.2 °C | 30.99 mm |
| December | -10.4 °C | -0.7 °C | 21.08 mm |
| Annual | 2.3 °C | 14.2 °C | 695.47 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |