Montréal-Ouest, Quebec climate data is summarized below. Average annual temperatures range from 3.7 °C (low) to 12 °C (high). Annual precipitation averages 933 Millimeters. Montréal-Ouest 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 | -11.49 °C | -4.09 °C | 16 mm |
| February | -11.18 °C | -3.7 °C | 19 mm |
| March | -5.15 °C | 3.15 °C | 56 mm |
| April | 2.58 °C | 12 °C | 109 mm |
| May | 9.45 °C | 19.62 °C | 90 mm |
| June | 14.55 °C | 23.91 °C | 99 mm |
| July | 17.36 °C | 26.63 °C | 132 mm |
| August | 16.66 °C | 25.77 °C | 102 mm |
| September | 11.93 °C | 21.3 °C | 71 mm |
| October | 6.08 °C | 13.64 °C | 111 mm |
| November | -0.04 °C | 6.71 °C | 77 mm |
| December | -7.06 °C | -1.18 °C | 51 mm |
| Annual | 3.7 °C | 12 °C | 933 mm |
| 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 : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |