Baie-Comeau, Quebec climate data is summarized below. Average annual temperatures range from -0.6 °C (low) to 6.6 °C (high). Annual precipitation averages 775 Millimeters. Baie-Comeau is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.75 °C | -7.46 °C | 0 mm |
| February | -14.76 °C | -6.37 °C | 0 mm |
| March | -10.69 °C | -2.04 °C | 0 mm |
| April | -1.89 °C | 4.79 °C | 66 mm |
| May | 4.04 °C | 11.13 °C | 80 mm |
| June | 9.29 °C | 16.59 °C | 98 mm |
| July | 12.27 °C | 19.74 °C | 94 mm |
| August | 12.49 °C | 19.39 °C | 95 mm |
| September | 7.71 °C | 14.94 °C | 104 mm |
| October | 2.95 °C | 9.13 °C | 113 mm |
| November | -2.31 °C | 3.11 °C | 96 mm |
| December | -10.48 °C | -3.64 °C | 29 mm |
| Annual | -0.6 °C | 6.6 °C | 775 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |