Rosemère, Quebec climate data is summarized below. Average annual temperatures range from 36.6 °F (low) to 52.7 °F (high). Annual precipitation averages 34.1 Inches. Rosemère 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 | -25.2 °F | -20.6 °F | 177.8 in. |
| February | -25 °F | -20.2 °F | 279.4 in. |
| March | -21.5 °F | -16.4 °F | 1016 in. |
| April | -16.9 °F | -11.5 °F | 2311.4 in. |
| May | -12.9 °F | -6.9 °F | 2260.6 in. |
| June | -10 °F | -4.5 °F | 2895.6 in. |
| July | -8.5 °F | -3.1 °F | 3479.8 in. |
| August | -8.9 °F | -3.6 °F | 2692.4 in. |
| September | -11.6 °F | -6.1 °F | 1879.6 in. |
| October | -14.9 °F | -10.4 °F | 2667 in. |
| November | -18.3 °F | -14.4 °F | 1600.2 in. |
| December | -22.6 °F | -18.9 °F | 736.6 in. |
| Annual | 36.6 °F | 52.7 °F | 34.07 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 |