Coaticook, Quebec climate data is summarized below. Average annual temperatures range from 0.3 °C (low) to 9.9 °C (high). Annual precipitation averages 254 Millimeters. Coaticook is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.44 °C | -5.06 °C | 0 mm |
| February | -14.34 °C | -4.8 °C | 0 mm |
| March | -8.42 °C | 1.46 °C | 0 mm |
| April | -0.74 °C | 9.61 °C | 12 mm |
| May | 5.83 °C | 16.81 °C | 27 mm |
| June | 10.75 °C | 20.94 °C | 42 mm |
| July | 13.59 °C | 23.8 °C | 64 mm |
| August | 12.8 °C | 22.73 °C | 56 mm |
| September | 8.35 °C | 18.65 °C | 23 mm |
| October | 2.96 °C | 11.62 °C | 20 mm |
| November | -3.04 °C | 4.91 °C | 9 mm |
| December | -9.76 °C | -2.13 °C | 1 mm |
| Annual | 0.3 °C | 9.9 °C | 254 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |