McMasterville, Quebec climate data is summarized below. Average annual temperatures range from 2.9 °C (low) to 12.1 °C (high). Annual precipitation averages 946 Millimeters. McMasterville 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 | -12.18 °C | -4.13 °C | 22 mm |
| February | -11.87 °C | -3.62 °C | 23 mm |
| March | -6.33 °C | 3.11 °C | 56 mm |
| April | 1.94 °C | 12.18 °C | 105 mm |
| May | 8.87 °C | 19.87 °C | 103 mm |
| June | 14.09 °C | 24.27 °C | 109 mm |
| July | 16.7 °C | 26.86 °C | 128 mm |
| August | 15.86 °C | 25.97 °C | 92 mm |
| September | 11.13 °C | 21.47 °C | 73 mm |
| October | 5.36 °C | 13.89 °C | 112 mm |
| November | -0.56 °C | 6.79 °C | 74 mm |
| December | -7.8 °C | -1.27 °C | 49 mm |
| Annual | 2.9 °C | 12.1 °C | 946 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 |