Trois-Rivières, Quebec climate data is summarized below. Average annual temperatures range from 1.7 °C (low) to 10.5 °C (high). Annual precipitation averages 272 Millimeters. Trois-Rivières 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 | -14.58 °C | -5.72 °C | 0 mm |
| February | -14.11 °C | -4.86 °C | 0 mm |
| March | -8.34 °C | 1.07 °C | 8 mm |
| April | 0.7 °C | 10.37 °C | 23 mm |
| May | 7.74 °C | 18.18 °C | 22 mm |
| June | 12.96 °C | 22.63 °C | 38 mm |
| July | 15.94 °C | 25.11 °C | 67 mm |
| August | 15.23 °C | 24.32 °C | 37 mm |
| September | 10.35 °C | 19.84 °C | 27 mm |
| October | 4.9 °C | 12.52 °C | 29 mm |
| November | -1.05 °C | 5.46 °C | 15 mm |
| December | -9.39 °C | -2.81 °C | 6 mm |
| Annual | 1.7 °C | 10.5 °C | 272 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |