Terrebonne, Quebec climate data is summarized below. Average annual temperatures range from 2.3 °C (low) to 11.4 °C (high). Annual precipitation averages 850 Millimeters. Terrebonne is located in USDA Plant Hardiness Zone 5b. 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 | -13.48 °C | -5.17 °C | 8 mm |
| February | -12.96 °C | -4.35 °C | 11 mm |
| March | -6.86 °C | 2.41 °C | 37 mm |
| April | 1.37 °C | 11.26 °C | 87 mm |
| May | 8.62 °C | 19.39 °C | 91 mm |
| June | 13.8 °C | 23.87 °C | 116 mm |
| July | 16.51 °C | 26.31 °C | 127 mm |
| August | 15.7 °C | 25.43 °C | 106 mm |
| September | 10.83 °C | 20.96 °C | 77 mm |
| October | 4.94 °C | 13.21 °C | 100 mm |
| November | -1.17 °C | 5.95 °C | 61 mm |
| December | -9 °C | -2.22 °C | 29 mm |
| Annual | 2.3 °C | 11.4 °C | 850 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |