Nelson Forks, British Columbia climate data is summarized below. Average annual temperatures range from -5.7 °C (low) to 4.2 °C (high). Annual precipitation averages 276 Millimeters. Nelson Forks is located in USDA Plant Hardiness Zone 2b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Aug. 21 - Aug. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -22.44 °C | -12.79 °C | 0 mm |
| February | -20.35 °C | -9.66 °C | 0 mm |
| March | -17.41 °C | -6.95 °C | 0 mm |
| April | -4.7 °C | 3.88 °C | 12 mm |
| May | 2.13 °C | 14.28 °C | 42 mm |
| June | 7.37 °C | 20.39 °C | 51 mm |
| July | 10.37 °C | 22.57 °C | 68 mm |
| August | 8.29 °C | 20.2 °C | 47 mm |
| September | 3.74 °C | 13.16 °C | 36 mm |
| October | -1.68 °C | 4.91 °C | 20 mm |
| November | -13.31 °C | -6.73 °C | 0 mm |
| December | -20.87 °C | -12.36 °C | 0 mm |
| Annual | -5.7 °C | 4.2 °C | 276 mm |
| Average First Frost Date | Aug. 21 - Aug. 31 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 2b : -42.8°C to -40°C |
| Current Drought Conditions | Abnormally Dry |