Hazelton, British Columbia climate data is summarized below. Average annual temperatures range from 0.5 °C (low) to 8 °C (high). Annual precipitation averages 538 Millimeters. Hazelton is located in USDA Plant Hardiness Zone 5a. 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 | -6.38 °C | -0.54 °C | 0 mm |
| February | -6.85 °C | -0.19 °C | 0 mm |
| March | -6.29 °C | 2.1 °C | 0 mm |
| April | -1.65 °C | 6.37 °C | 36 mm |
| May | 3.73 °C | 12.79 °C | 61 mm |
| June | 6.98 °C | 15.64 °C | 74 mm |
| July | 9.69 °C | 18.75 °C | 70 mm |
| August | 8.93 °C | 19.04 °C | 65 mm |
| September | 6.12 °C | 14.57 °C | 91 mm |
| October | 2.2 °C | 7.79 °C | 114 mm |
| November | -3.17 °C | 1.34 °C | 27 mm |
| December | -7.6 °C | -2.15 °C | 0 mm |
| Annual | 0.5 °C | 8 °C | 538 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |