Sutton West, Ontario climate data is summarized below. Average annual temperatures range from 38 °F (low) to 52.5 °F (high). Annual precipitation averages 26.8 Inches. 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 | -23.3 °F | -19.2 °F | 279.4 in. |
| February | -24.1 °F | -19.5 °F | 0 in. |
| March | -20.7 °F | -16.1 °F | 889 in. |
| April | -17.1 °F | -12.2 °F | 1320.8 in. |
| May | -13.7 °F | -8.2 °F | 2032 in. |
| June | -10.7 °F | -5.6 °F | 2540 in. |
| July | -8.8 °F | -4 °F | 3175 in. |
| August | -8.9 °F | -4.3 °F | 2667 in. |
| September | -11.2 °F | -6.5 °F | 1701.8 in. |
| October | -14.1 °F | -10.2 °F | 1219.2 in. |
| November | -17.6 °F | -13.9 °F | 889 in. |
| December | -20.8 °F | -17.6 °F | 558.8 in. |
| Annual | 38 °F | 52.5 °F | 26.78 in. |
| 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 : -15°F to -10°F |
| Current Drought Conditions | Normal |