Courtenay, British Columbia climate data is summarized below. Average annual temperatures range from 43.6 °F (low) to 58 °F (high). Annual precipitation averages 62.3 Inches. 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 | -17.2 °F | -14.7 °F | 5537.2 in. |
| February | -16.9 °F | -13.7 °F | 4013.2 in. |
| March | -16.5 °F | -12.6 °F | 5003.8 in. |
| April | -15.4 °F | -10.4 °F | 2260.6 in. |
| May | -13 °F | -7.6 °F | 1422.4 in. |
| June | -11.4 °F | -6.1 °F | 1066.8 in. |
| July | -9.9 °F | -3.7 °F | 711.2 in. |
| August | -10 °F | -3.8 °F | 863.6 in. |
| September | -11.9 °F | -6.4 °F | 2032 in. |
| October | -14.2 °F | -10.3 °F | 5588 in. |
| November | -16.4 °F | -13.1 °F | 6400.8 in. |
| December | -17.5 °F | -14.8 °F | 5308.6 in. |
| Annual | 43.6 °F | 58 °F | 62.31 in. |
| 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 : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |