Colleymount, British Columbia climate data is summarized below. Average annual temperatures range from -2.5 °C (low) to 5.8 °C (high). Annual precipitation averages 336 Millimeters. Colleymount is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.61 °C | -3.89 °C | 0 mm |
| February | -10.79 °C | -2.44 °C | 0 mm |
| March | -8.92 °C | 0.05 °C | 0 mm |
| April | -5.21 °C | 3.4 °C | 31 mm |
| May | 0.95 °C | 11.09 °C | 44 mm |
| June | 4.52 °C | 14.1 °C | 62 mm |
| July | 7.22 °C | 17.59 °C | 52 mm |
| August | 6.67 °C | 17.57 °C | 41 mm |
| September | 3.26 °C | 12.64 °C | 42 mm |
| October | -0.53 °C | 5.55 °C | 56 mm |
| November | -5.96 °C | -1 °C | 8 mm |
| December | -10.61 °C | -4.7 °C | 0 mm |
| Annual | -2.5 °C | 5.8 °C | 336 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Abnormally Dry |