Saint-Henri, Quebec climate data is summarized below. Average annual temperatures range from 33.9 °F (low) to 50.6 °F (high). Annual precipitation averages 33.9 Inches. Saint-Henri is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -25.7 °F | -20.9 °F | 0 in. |
| February | -25.3 °F | -20.4 °F | 0 in. |
| March | -22.5 °F | -17.3 °F | 330.2 in. |
| April | -17.9 °F | -12.3 °F | 1727.2 in. |
| May | -14.2 °F | -7.9 °F | 2387.6 in. |
| June | -11.3 °F | -5.3 °F | 2946.4 in. |
| July | -9.5 °F | -3.7 °F | 3759.2 in. |
| August | -9.9 °F | -4.3 °F | 3225.8 in. |
| September | -12.6 °F | -6.9 °F | 2616.2 in. |
| October | -15.6 °F | -11.1 °F | 2794 in. |
| November | -18.8 °F | -14.9 °F | 1828.8 in. |
| December | -23.1 °F | -19.4 °F | 228.6 in. |
| Annual | 33.9 °F | 50.6 °F | 33.86 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |