Saint-Constant, Quebec climate data is summarized below. Average annual temperatures range from 37.7 °F (low) to 53.8 °F (high). Annual precipitation averages 35.1 Inches. Saint-Constant 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -24.4 °F | -20 °F | 406.4 in. |
| February | -24.2 °F | -19.8 °F | 533.4 in. |
| March | -20.9 °F | -16 °F | 1473.2 in. |
| April | -16.6 °F | -11 °F | 2667 in. |
| May | -12.8 °F | -6.8 °F | 2311.4 in. |
| June | -9.9 °F | -4.4 °F | 2336.8 in. |
| July | -8.4 °F | -2.8 °F | 3073.4 in. |
| August | -8.8 °F | -3.3 °F | 2209.8 in. |
| September | -11.5 °F | -5.9 °F | 1727.2 in. |
| October | -14.7 °F | -10.1 °F | 2768.6 in. |
| November | -18.1 °F | -14 °F | 1828.8 in. |
| December | -21.8 °F | -18.4 °F | 1295.4 in. |
| Annual | 37.7 °F | 53.8 °F | 35.07 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 |