Lefaivre, Ontario climate data is summarized below. Average annual temperatures range from 1.1 °C (low) to 12 °C (high). Annual precipitation averages 416 Millimeters. Lefaivre 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.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.81 °C | -4.95 °C | 0 mm |
| February | -14.52 °C | -4.04 °C | 0 mm |
| March | -8.16 °C | 2.54 °C | 12 mm |
| April | 0.48 °C | 12.09 °C | 28 mm |
| May | 7.33 °C | 20.23 °C | 37 mm |
| June | 12.63 °C | 24.66 °C | 71 mm |
| July | 14.96 °C | 27.16 °C | 89 mm |
| August | 14.03 °C | 26.04 °C | 81 mm |
| September | 9.26 °C | 21.51 °C | 47 mm |
| October | 3.81 °C | 13.91 °C | 34 mm |
| November | -2.33 °C | 6.45 °C | 13 mm |
| December | -9.95 °C | -1.96 °C | 4 mm |
| Annual | 1.1 °C | 12 °C | 416 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |