Brossard, Quebec climate data is summarized below. Average annual temperatures range from 38 °F (low) to 54.2 °F (high). Annual precipitation averages 36.8 Inches. Brossard is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -24.3 °F | -20 °F | 533.4 in. |
| February | -24.1 °F | -19.8 °F | 584.2 in. |
| March | -21 °F | -16 °F | 1549.4 in. |
| April | -16.6 °F | -10.9 °F | 2768.6 in. |
| May | -12.7 °F | -6.6 °F | 2514.6 in. |
| June | -9.8 °F | -4.1 °F | 2590.8 in. |
| July | -8.3 °F | -2.7 °F | 3175 in. |
| August | -8.7 °F | -3.2 °F | 2133.6 in. |
| September | -11.3 °F | -5.7 °F | 1803.4 in. |
| October | -14.6 °F | -10 °F | 2794 in. |
| November | -17.9 °F | -13.9 °F | 1930.4 in. |
| December | -21.8 °F | -18.4 °F | 1371.6 in. |
| Annual | 38 °F | 54.2 °F | 36.83 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |