Prince Rupert, British Columbia climate data is summarized below. Average annual temperatures range from 41.6 °F (low) to 47.8 °F (high). Annual precipitation averages 96.6 Inches. Prince Rupert is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.1 °F | -15.4 °F | 7162.8 in. |
| February | -17.1 °F | -15.3 °F | 5461 in. |
| March | -16.8 °F | -14.9 °F | 5613.4 in. |
| April | -15.8 °F | -13.6 °F | 4191 in. |
| May | -14.2 °F | -12 °F | 2743.2 in. |
| June | -12.9 °F | -10.9 °F | 2616.2 in. |
| July | -11.8 °F | -9.9 °F | 2108.2 in. |
| August | -11.7 °F | -9.7 °F | 3733.8 in. |
| September | -12.7 °F | -10.7 °F | 6045.2 in. |
| October | -14.1 °F | -12.4 °F | 9042.4 in. |
| November | -16.1 °F | -14.5 °F | 7467.6 in. |
| December | -17.5 °F | -15.8 °F | 6146.8 in. |
| Annual | 41.6 °F | 47.8 °F | 96.62 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |