Charlesbourg, Quebec climate data is summarized below. Average annual temperatures range from 32.6 °F (low) to 49.1 °F (high). Annual precipitation averages 36.2 Inches. Charlesbourg 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 | -26.4 °F | -21.4 °F | 0 in. |
| February | -25.8 °F | -20.8 °F | 0 in. |
| March | -22.8 °F | -17.7 °F | 279.4 in. |
| April | -18.3 °F | -13.1 °F | 1651 in. |
| May | -14.4 °F | -8.4 °F | 2336.8 in. |
| June | -11.5 °F | -5.7 °F | 3175 in. |
| July | -9.8 °F | -4.1 °F | 3860.8 in. |
| August | -10.2 °F | -4.7 °F | 3530.6 in. |
| September | -12.9 °F | -7.4 °F | 3022.6 in. |
| October | -16 °F | -11.6 °F | 3251.2 in. |
| November | -19.2 °F | -15.5 °F | 1981.2 in. |
| December | -23.8 °F | -19.8 °F | 279.4 in. |
| Annual | 32.6 °F | 49.1 °F | 36.21 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 |