Hartley Bay, British Columbia climate data is summarized below. Average annual temperatures range from 40.4 °F (low) to 48.7 °F (high). Annual precipitation averages 126.2 Inches. Hartley Bay is located in USDA Plant Hardiness Zone 8a. 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 | -17.8 °F | -15.7 °F | 9042.4 in. |
| February | -17.7 °F | -15.5 °F | 7289.8 in. |
| March | -17.3 °F | -15 °F | 7493 in. |
| April | -16.2 °F | -13.4 °F | 5969 in. |
| May | -14.6 °F | -11.4 °F | 3479.8 in. |
| June | -13.1 °F | -10.4 °F | 3403.6 in. |
| July | -11.9 °F | -8.8 °F | 2692.4 in. |
| August | -11.8 °F | -8.5 °F | 3733.8 in. |
| September | -12.9 °F | -10 °F | 7594.6 in. |
| October | -14.5 °F | -12.2 °F | 12293.6 in. |
| November | -16.5 °F | -14.5 °F | 9829.8 in. |
| December | -18 °F | -16.1 °F | 8559.8 in. |
| Annual | 40.4 °F | 48.7 °F | 126.15 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |