Coquitlam, British Columbia climate data is summarized below. Average annual temperatures range from 43.9 °F (low) to 58.9 °F (high). Annual precipitation averages 20.9 Inches. Coquitlam is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.4 °F | -14.5 °F | 2006.6 in. |
| February | -16.6 °F | -13.1 °F | 1397 in. |
| March | -16.2 °F | -12 °F | 2057.4 in. |
| April | -15.2 °F | -9.8 °F | 939.8 in. |
| May | -13.1 °F | -7.2 °F | 584.2 in. |
| June | -11.6 °F | -6 °F | 533.4 in. |
| July | -10.2 °F | -3.9 °F | 508 in. |
| August | -10.1 °F | -3.9 °F | 381 in. |
| September | -11.7 °F | -6.1 °F | 838.2 in. |
| October | -13.8 °F | -9.5 °F | 1676.4 in. |
| November | -16.1 °F | -12.8 °F | 1701.8 in. |
| December | -17.5 °F | -14.9 °F | 863.6 in. |
| Annual | 43.9 °F | 58.9 °F | 20.93 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |