Lac-Saint-Charles, Quebec climate data is summarized below. Annual precipitation averages 971 Millimeters. Lac-Saint-Charles is located in USDA Plant Hardiness Zone 4b. 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 | -15.89 °C | -6.55 °C | 0 mm |
| February | -14.93 °C | -5.5 °C | 0 mm |
| March | -9.44 °C | 0.04 °C | 12 mm |
| April | -1.23 °C | 8.11 °C | 69 mm |
| May | 5.62 °C | 16.93 °C | 96 mm |
| June | 10.95 °C | 21.76 °C | 129 mm |
| July | 13.76 °C | 24.44 °C | 160 mm |
| August | 13.13 °C | 23.59 °C | 149 mm |
| September | 8.38 °C | 18.75 °C | 130 mm |
| October | 3 °C | 11.23 °C | 135 mm |
| November | -2.8 °C | 4.11 °C | 81 mm |
| December | -11 °C | -3.54 °C | 10 mm |
| Annual | -0 °C | 9.4 °C | 971 mm |
| 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 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |