Louiseville, Quebec climate data is summarized below. Average annual temperatures range from 1.6 °C (low) to 10.7 °C (high). Annual precipitation averages 527 Millimeters. Louiseville 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 | -14.52 °C | -5.88 °C | 0 mm |
| February | -14.21 °C | -4.97 °C | 0 mm |
| March | -8.3 °C | 0.97 °C | 11 mm |
| April | 0.27 °C | 10.23 °C | 39 mm |
| May | 7.74 °C | 18.5 °C | 46 mm |
| June | 13.18 °C | 22.98 °C | 86 mm |
| July | 15.99 °C | 25.7 °C | 119 mm |
| August | 15.2 °C | 24.82 °C | 78 mm |
| September | 10.43 °C | 20.3 °C | 53 mm |
| October | 4.77 °C | 12.66 °C | 58 mm |
| November | -1.29 °C | 5.46 °C | 28 mm |
| December | -9.71 °C | -2.89 °C | 9 mm |
| Annual | 1.6 °C | 10.7 °C | 527 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |