Coquitlam, British Columbia climate data is summarized below. Average annual temperatures range from 6.6 °C (low) to 14.9 °C (high). Annual precipitation averages 531 Millimeters. 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 | 0.65 °C | 5.85 °C | 79 mm |
| February | 2.04 °C | 8.43 °C | 55 mm |
| March | 2.82 °C | 10.43 °C | 81 mm |
| April | 4.63 °C | 14.29 °C | 37 mm |
| May | 8.48 °C | 18.99 °C | 23 mm |
| June | 11.19 °C | 21.13 °C | 21 mm |
| July | 13.69 °C | 25.06 °C | 20 mm |
| August | 13.79 °C | 24.91 °C | 15 mm |
| September | 10.99 °C | 21.03 °C | 33 mm |
| October | 7.13 °C | 14.88 °C | 66 mm |
| November | 3.09 °C | 8.91 °C | 67 mm |
| December | 0.56 °C | 5.19 °C | 34 mm |
| Annual | 6.6 °C | 14.9 °C | 531 mm |
| 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 : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |