Sutton West, Ontario climate data is summarized below. Average annual temperatures range from 3.4 °C (low) to 11.4 °C (high). Annual precipitation averages 680 Millimeters. Sutton West is located in USDA Plant Hardiness Zone 5b. 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 | -10.02 °C | -2.62 °C | 11 mm |
| February | -11.32 °C | -3.18 °C | 0 mm |
| March | -5.24 °C | 3.04 °C | 35 mm |
| April | 1.25 °C | 10.07 °C | 52 mm |
| May | 7.29 °C | 17.16 °C | 80 mm |
| June | 12.78 °C | 21.85 °C | 100 mm |
| July | 16.13 °C | 24.86 °C | 125 mm |
| August | 15.94 °C | 24.29 °C | 105 mm |
| September | 11.84 °C | 20.29 °C | 67 mm |
| October | 6.63 °C | 13.59 °C | 48 mm |
| November | 0.35 °C | 7.05 °C | 35 mm |
| December | -5.37 °C | 0.37 °C | 22 mm |
| Annual | 3.4 °C | 11.4 °C | 680 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |