Windsor, Ontario climate data is summarized below. Average annual temperatures range from 42.7 °F (low) to 58.1 °F (high). Annual precipitation averages 24.9 Inches. Windsor is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -21.6 °F | -18.1 °F | 431.8 in. |
| February | -22 °F | -18.1 °F | 203.2 in. |
| March | -18.6 °F | -13.7 °F | 1016 in. |
| April | -15.5 °F | -9.8 °F | 1473.2 in. |
| May | -12 °F | -6.1 °F | 1930.4 in. |
| June | -8.8 °F | -3.3 °F | 2286 in. |
| July | -7.5 °F | -2.2 °F | 2057.4 in. |
| August | -7.7 °F | -2.6 °F | 1803.4 in. |
| September | -10.2 °F | -5.1 °F | 1727.2 in. |
| October | -13.4 °F | -8.8 °F | 1193.8 in. |
| November | -16.8 °F | -12.7 °F | 1168.4 in. |
| December | -19.5 °F | -16.3 °F | 762 in. |
| Annual | 42.7 °F | 58.1 °F | 24.87 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Normal |