Metchosin, British Columbia climate data is summarized below. Average annual temperatures range from 7.1 °C (low) to 13.1 °C (high). Annual precipitation averages 1508 Millimeters. Metchosin is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.68 °C | 6.51 °C | 191 mm |
| February | 3.74 °C | 8.02 °C | 134 mm |
| March | 4.15 °C | 9.19 °C | 169 mm |
| April | 5.33 °C | 12.03 °C | 95 mm |
| May | 7.82 °C | 15.34 °C | 73 mm |
| June | 10.21 °C | 17.59 °C | 26 mm |
| July | 12.35 °C | 21.08 °C | 16 mm |
| August | 12.63 °C | 20.93 °C | 28 mm |
| September | 11.01 °C | 17.48 °C | 77 mm |
| October | 8.01 °C | 13.01 °C | 185 mm |
| November | 4.95 °C | 9.23 °C | 281 mm |
| December | 2.79 °C | 6.41 °C | 233 mm |
| Annual | 7.1 °C | 13.1 °C | 1508 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Abnormally Dry |