Courtenay, British Columbia climate data is summarized below. Average annual temperatures range from 6.4 °C (low) to 14.4 °C (high). Annual precipitation averages 1583 Millimeters. Courtenay is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.98 °C | 5.6 °C | 218 mm |
| February | 1.58 °C | 7.38 °C | 158 mm |
| March | 2.24 °C | 9.32 °C | 197 mm |
| April | 4.26 °C | 13.21 °C | 89 mm |
| May | 8.53 °C | 18.35 °C | 56 mm |
| June | 11.43 °C | 20.94 °C | 42 mm |
| July | 14.18 °C | 25.33 °C | 28 mm |
| August | 14.03 °C | 25.11 °C | 34 mm |
| September | 10.56 °C | 20.41 °C | 80 mm |
| October | 6.38 °C | 13.53 °C | 220 mm |
| November | 2.42 °C | 8.51 °C | 252 mm |
| December | 0.52 °C | 5.38 °C | 209 mm |
| Annual | 6.4 °C | 14.4 °C | 1583 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |