Wemindji, Quebec climate data is summarized below. Average annual temperatures range from -6.8 °C (low) to 2.4 °C (high). Annual precipitation averages 640 Millimeters. Wemindji is located in USDA Plant Hardiness Zone 1a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -26.49 °C | -16.3 °C | 0 mm |
| February | -28.7 °C | -15.59 °C | 0 mm |
| March | -22.65 °C | -8.04 °C | 0 mm |
| April | -10.5 °C | 0.58 °C | 18 mm |
| May | -1.54 °C | 8.43 °C | 60 mm |
| June | 4.24 °C | 15.27 °C | 60 mm |
| July | 6.76 °C | 16.58 °C | 121 mm |
| August | 8.87 °C | 16.95 °C | 121 mm |
| September | 6.3 °C | 12.73 °C | 110 mm |
| October | 2.55 °C | 7.16 °C | 99 mm |
| November | -3.6 °C | 0.57 °C | 51 mm |
| December | -17.13 °C | -10.18 °C | 0 mm |
| Annual | -6.8 °C | 2.4 °C | 640 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 1a : |
| Current Drought Conditions | Normal |