Windsor, Quebec climate data is summarized below. Average annual temperatures range from 33.2 °F (low) to 52.6 °F (high). Annual precipitation averages 8.9 Inches. Windsor is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -25.7 °F | -20.2 °F | 0 in. |
| February | -25.7 °F | -20 °F | 0 in. |
| March | -22.5 °F | -16.5 °F | 25.4 in. |
| April | -17.9 °F | -11.5 °F | 431.8 in. |
| May | -14.2 °F | -7.2 °F | 609.6 in. |
| June | -11.5 °F | -4.9 °F | 762 in. |
| July | -9.9 °F | -3.3 °F | 1219.2 in. |
| August | -10.3 °F | -3.9 °F | 1092.2 in. |
| September | -13 °F | -6.3 °F | 508 in. |
| October | -15.9 °F | -10.4 °F | 584.2 in. |
| November | -19.2 °F | -14.3 °F | 330.2 in. |
| December | -22.9 °F | -18.6 °F | 152.4 in. |
| Annual | 33.2 °F | 52.6 °F | 8.86 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |