Port Mellon, British Columbia climate data is summarized below. Average annual temperatures range from 6.3 °C (low) to 12.5 °C (high). Annual precipitation averages 1039 Millimeters. Port Mellon is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.36 °C | 4.47 °C | 124 mm |
| February | 1.46 °C | 6.03 °C | 91 mm |
| March | 1.94 °C | 7.39 °C | 122 mm |
| April | 4.2 °C | 11.04 °C | 61 mm |
| May | 7.96 °C | 15.78 °C | 39 mm |
| June | 10.71 °C | 18.01 °C | 34 mm |
| July | 13.84 °C | 22.37 °C | 32 mm |
| August | 14.1 °C | 22.38 °C | 34 mm |
| September | 11.07 °C | 18.59 °C | 76 mm |
| October | 6.91 °C | 12.26 °C | 173 mm |
| November | 2.8 °C | 7.15 °C | 152 mm |
| December | 0.1 °C | 3.96 °C | 101 mm |
| Annual | 6.3 °C | 12.5 °C | 1039 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |