Saint-Lazare, Quebec climate data is summarized below. Average annual temperatures range from 35.9 °F (low) to 52.3 °F (high). Annual precipitation averages 22.9 Inches. Saint-Lazare is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -25.4 °F | -20.6 °F | 0 in. |
| February | -25.2 °F | -20.3 °F | 0 in. |
| March | -21.8 °F | -16.7 °F | 558.8 in. |
| April | -17 °F | -11.6 °F | 1473.2 in. |
| May | -13.2 °F | -7.2 °F | 1447.8 in. |
| June | -10.2 °F | -4.7 °F | 1955.8 in. |
| July | -8.8 °F | -3.3 °F | 2971.8 in. |
| August | -9.3 °F | -3.8 °F | 2133.6 in. |
| September | -11.9 °F | -6.1 °F | 1397 in. |
| October | -15 °F | -10.4 °F | 1778 in. |
| November | -18.5 °F | -14.4 °F | 889 in. |
| December | -22.6 °F | -18.9 °F | 127 in. |
| Annual | 35.9 °F | 52.3 °F | 22.85 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |