North Cowichan, British Columbia climate data is summarized below. Average annual temperatures range from 6.4 °C (low) to 14.3 °C (high). Annual precipitation averages 1587 Millimeters. 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 | 0.96 °C | 5.79 °C | 211 mm |
| February | 1.84 °C | 7.83 °C | 142 mm |
| March | 2.56 °C | 9.61 °C | 161 mm |
| April | 4.5 °C | 13.48 °C | 82 mm |
| May | 8.21 °C | 17.99 °C | 68 mm |
| June | 10.78 °C | 20.59 °C | 45 mm |
| July | 13.4 °C | 24.09 °C | 30 mm |
| August | 13.34 °C | 24.04 °C | 38 mm |
| September | 10.53 °C | 20.17 °C | 93 mm |
| October | 6.75 °C | 13.85 °C | 224 mm |
| November | 3.05 °C | 8.87 °C | 270 mm |
| December | 0.79 °C | 5.54 °C | 223 mm |
| Annual | 6.4 °C | 14.3 °C | 1587 mm |
| 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 : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |