Chapais, Quebec climate data is summarized below. Average annual temperatures range from -4.9 °C (low) to 5.6 °C (high). Annual precipitation averages 735 Millimeters. Chapais is located in USDA Plant Hardiness Zone 2a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -23.86 °C | -12.64 °C | 0 mm |
| February | -23.16 °C | -10.87 °C | 0 mm |
| March | -17.8 °C | -4 °C | 0 mm |
| April | -7.08 °C | 3.88 °C | 44 mm |
| May | 1.58 °C | 14.04 °C | 89 mm |
| June | 8.38 °C | 20.2 °C | 114 mm |
| July | 11.25 °C | 21.61 °C | 138 mm |
| August | 10.59 °C | 20.61 °C | 129 mm |
| September | 5.78 °C | 15.61 °C | 98 mm |
| October | 0.6 °C | 7.79 °C | 97 mm |
| November | -6.33 °C | 0.02 °C | 26 mm |
| December | -18.3 °C | -8.77 °C | 0 mm |
| Annual | -4.9 °C | 5.6 °C | 735 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 2a : -45.6°C to -42.8°C |
| Current Drought Conditions | Normal |