Shawinigan, Quebec climate data is summarized below. Average annual temperatures range from 0.6 °C (low) to 9.8 °C (high). Annual precipitation averages 300 Millimeters. Shawinigan 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.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.61 °C | -6.68 °C | 0 mm |
| February | -14.8 °C | -5.49 °C | 0 mm |
| March | -9.03 °C | 0.42 °C | 6 mm |
| April | -0.89 °C | 8.72 °C | 22 mm |
| May | 6.62 °C | 17.84 °C | 20 mm |
| June | 11.93 °C | 22.2 °C | 44 mm |
| July | 14.71 °C | 24.75 °C | 75 mm |
| August | 14.04 °C | 23.93 °C | 53 mm |
| September | 9.07 °C | 19.23 °C | 33 mm |
| October | 3.69 °C | 11.66 °C | 30 mm |
| November | -2.29 °C | 4.5 °C | 13 mm |
| December | -10.77 °C | -3.79 °C | 4 mm |
| Annual | 0.6 °C | 9.8 °C | 300 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| 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 |