Sainte-Thérèse, Quebec climate data is summarized below. Average annual temperatures range from 2.4 °C (low) to 11.4 °C (high). Annual precipitation averages 850 Millimeters. Sainte-Thérèse is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.58 °C | -5.23 °C | 7 mm |
| February | -13.17 °C | -4.48 °C | 9 mm |
| March | -7.03 °C | 2.3 °C | 37 mm |
| April | 1.36 °C | 11.12 °C | 88 mm |
| May | 8.61 °C | 19.32 °C | 88 mm |
| June | 13.81 °C | 23.75 °C | 116 mm |
| July | 16.51 °C | 26.22 °C | 136 mm |
| August | 15.77 °C | 25.35 °C | 106 mm |
| September | 10.93 °C | 20.87 °C | 73 mm |
| October | 5.07 °C | 13.2 °C | 103 mm |
| November | -1.13 °C | 5.94 °C | 59 mm |
| December | -8.96 °C | -2.19 °C | 28 mm |
| Annual | 2.4 °C | 11.4 °C | 850 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |