Louiseville, Quebec climate data is summarized below. Average annual temperatures range from 34.9 °F (low) to 51.2 °F (high). Annual precipitation averages 20.8 Inches. 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 | -25.8 °F | -21 °F | 0 in. |
| February | -25.7 °F | -20.5 °F | 0 in. |
| March | -22.4 °F | -17.2 °F | 279.4 in. |
| April | -17.6 °F | -12.1 °F | 990.6 in. |
| May | -13.5 °F | -7.5 °F | 1168.4 in. |
| June | -10.5 °F | -5 °F | 2184.4 in. |
| July | -8.9 °F | -3.5 °F | 3022.6 in. |
| August | -9.3 °F | -4 °F | 1981.2 in. |
| September | -12 °F | -6.5 °F | 1346.2 in. |
| October | -15.1 °F | -10.7 °F | 1473.2 in. |
| November | -18.5 °F | -14.7 °F | 711.2 in. |
| December | -23.2 °F | -19.4 °F | 228.6 in. |
| Annual | 34.9 °F | 51.2 °F | 20.75 in. |
| 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 : -20°F to -15°F |
| Current Drought Conditions | Normal |