Rimouski, Quebec climate data is summarized below. Average annual temperatures range from 0.4 °C (low) to 8.2 °C (high). Annual precipitation averages 705 Millimeters. Rimouski 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.68 °C | -6.46 °C | 0 mm |
| February | -12.89 °C | -5.7 °C | 0 mm |
| March | -9.48 °C | -1.29 °C | 0 mm |
| April | -1.45 °C | 5.7 °C | 55 mm |
| May | 4.81 °C | 13.68 °C | 72 mm |
| June | 9.91 °C | 19.35 °C | 104 mm |
| July | 13.56 °C | 22.52 °C | 106 mm |
| August | 13.02 °C | 21.82 °C | 95 mm |
| September | 8.72 °C | 17 °C | 98 mm |
| October | 3.68 °C | 10.3 °C | 98 mm |
| November | -1.6 °C | 4.12 °C | 71 mm |
| December | -9.46 °C | -3.17 °C | 6 mm |
| Annual | 0.4 °C | 8.2 °C | 705 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |