Dolbeau-Mistassini, Quebec climate data is summarized below. Average annual temperatures range from -2.6 °C (low) to 7.9 °C (high). Annual precipitation averages 830 Millimeters. Dolbeau-Mistassini is located in USDA Plant Hardiness Zone 2b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -21.2 °C | -10.48 °C | 0 mm |
| February | -20.06 °C | -8.64 °C | 0 mm |
| March | -14.4 °C | -2.36 °C | 0 mm |
| April | -3.92 °C | 6.51 °C | 58 mm |
| May | 3.94 °C | 17.14 °C | 93 mm |
| June | 9.87 °C | 21.94 °C | 127 mm |
| July | 12.78 °C | 23.81 °C | 151 mm |
| August | 12 °C | 22.93 °C | 140 mm |
| September | 7.05 °C | 17.81 °C | 114 mm |
| October | 2.02 °C | 10.35 °C | 101 mm |
| November | -4.11 °C | 2.77 °C | 46 mm |
| December | -15.28 °C | -6.49 °C | 0 mm |
| Annual | -2.6 °C | 7.9 °C | 830 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 2b : -42.8°C to -40°C |
| Current Drought Conditions | Normal |