Saint-Lazare, Quebec climate data is summarized below. Average annual temperatures range from 2.2 °C (low) to 11.3 °C (high). Annual precipitation averages 580 Millimeters. 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 | -13.68 °C | -5.14 °C | 0 mm |
| February | -13.37 °C | -4.61 °C | 0 mm |
| March | -7.21 °C | 1.88 °C | 22 mm |
| April | 1.39 °C | 11.13 °C | 58 mm |
| May | 8.2 °C | 19.03 °C | 57 mm |
| June | 13.57 °C | 23.53 °C | 77 mm |
| July | 16.19 °C | 26.07 °C | 117 mm |
| August | 15.33 °C | 25.23 °C | 84 mm |
| September | 10.56 °C | 20.94 °C | 55 mm |
| October | 4.95 °C | 13.3 °C | 70 mm |
| November | -1.31 °C | 6.14 °C | 35 mm |
| December | -8.76 °C | -1.99 °C | 5 mm |
| Annual | 2.2 °C | 11.3 °C | 580 mm |
| 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 : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |