Deux-Montagnes, Quebec climate data is summarized below. Average annual temperatures range from 37.3 °F (low) to 52.9 °F (high). Annual precipitation averages 32.1 Inches. Deux-Montagnes is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -24.9 °F | -20.5 °F | 228.6 in. |
| February | -24.7 °F | -20.2 °F | 254 in. |
| March | -21.3 °F | -16.5 °F | 990.6 in. |
| April | -16.6 °F | -11.4 °F | 2286 in. |
| May | -12.7 °F | -6.9 °F | 2006.6 in. |
| June | -9.9 °F | -4.5 °F | 2717.8 in. |
| July | -8.4 °F | -3.1 °F | 3378.2 in. |
| August | -8.8 °F | -3.5 °F | 2387.6 in. |
| September | -11.4 °F | -6 °F | 1727.2 in. |
| October | -14.7 °F | -10.3 °F | 2565.4 in. |
| November | -18.1 °F | -14.3 °F | 1498.6 in. |
| December | -22.3 °F | -18.8 °F | 660.4 in. |
| Annual | 37.3 °F | 52.9 °F | 32.08 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |