Laval, Quebec climate data is summarized below. Average annual temperatures range from 37.4 °F (low) to 53.1 °F (high). Annual precipitation averages 34.2 Inches. Laval 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 | -24.8 °F | -20.4 °F | 254 in. |
| February | -24.5 °F | -20.1 °F | 355.6 in. |
| March | -21.2 °F | -16.3 °F | 1143 in. |
| April | -16.7 °F | -11.3 °F | 2463.8 in. |
| May | -12.7 °F | -6.9 °F | 2311.4 in. |
| June | -9.8 °F | -4.4 °F | 2870.2 in. |
| July | -8.3 °F | -3 °F | 3251.2 in. |
| August | -8.7 °F | -3.5 °F | 2286 in. |
| September | -11.4 °F | -6 °F | 1828.8 in. |
| October | -14.7 °F | -10.3 °F | 2768.6 in. |
| November | -18.1 °F | -14.3 °F | 1727.2 in. |
| December | -22.3 °F | -18.8 °F | 838.2 in. |
| Annual | 37.4 °F | 53.1 °F | 34.24 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |