Saint-Romuald, Quebec climate data is summarized below. Average annual temperatures range from 34 °F (low) to 50.6 °F (high). Annual precipitation averages 35.5 Inches. Saint-Romuald is located in USDA Plant Hardiness Zone 5a. 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 | -25.8 °F | -21 °F | 0 in. |
| February | -25.5 °F | -20.4 °F | 0 in. |
| March | -22.6 °F | -17.3 °F | 406.4 in. |
| April | -17.9 °F | -12.4 °F | 1752.6 in. |
| May | -14.1 °F | -7.8 °F | 2362.2 in. |
| June | -11.1 °F | -5.2 °F | 3175 in. |
| July | -9.3 °F | -3.6 °F | 3937 in. |
| August | -9.8 °F | -4.2 °F | 3352.8 in. |
| September | -12.5 °F | -6.9 °F | 2743.2 in. |
| October | -15.5 °F | -11.2 °F | 2895.6 in. |
| November | -18.7 °F | -14.9 °F | 1879.6 in. |
| December | -23.2 °F | -19.4 °F | 406.4 in. |
| Annual | 34 °F | 50.6 °F | 35.51 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 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |