North Cowichan, British Columbia climate data is summarized below. Average annual temperatures range from 43.5 °F (low) to 57.8 °F (high). Annual precipitation averages 62.5 Inches. North Cowichan is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.2 °F | -14.6 °F | 5359.4 in. |
| February | -16.8 °F | -13.4 °F | 3606.8 in. |
| March | -16.4 °F | -12.4 °F | 4089.4 in. |
| April | -15.3 °F | -10.3 °F | 2082.8 in. |
| May | -13.2 °F | -7.8 °F | 1727.2 in. |
| June | -11.8 °F | -6.3 °F | 1143 in. |
| July | -10.3 °F | -4.4 °F | 762 in. |
| August | -10.4 °F | -4.4 °F | 965.2 in. |
| September | -11.9 °F | -6.6 °F | 2362.2 in. |
| October | -14 °F | -10.1 °F | 5689.6 in. |
| November | -16.1 °F | -12.9 °F | 6858 in. |
| December | -17.3 °F | -14.7 °F | 5664.2 in. |
| Annual | 43.5 °F | 57.8 °F | 62.49 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |