Nelson Forks, British Columbia climate data is summarized below. Average annual temperatures range from 21.7 °F (low) to 39.6 °F (high). Annual precipitation averages 10.9 Inches. 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 | -30.2 °F | -24.9 °F | 0 in. |
| February | -29.1 °F | -23.1 °F | 0 in. |
| March | -27.5 °F | -21.6 °F | 0 in. |
| April | -20.4 °F | -15.6 °F | 304.8 in. |
| May | -16.6 °F | -9.8 °F | 1066.8 in. |
| June | -13.7 °F | -6.5 °F | 1295.4 in. |
| July | -12 °F | -5.2 °F | 1727.2 in. |
| August | -13.2 °F | -6.6 °F | 1193.8 in. |
| September | -15.7 °F | -10.5 °F | 914.4 in. |
| October | -18.7 °F | -15.1 °F | 508 in. |
| November | -25.2 °F | -21.5 °F | 0 in. |
| December | -29.4 °F | -24.6 °F | 0 in. |
| Annual | 21.7 °F | 39.6 °F | 10.87 in. |
| 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 : -45°F to -40°F |
| Current Drought Conditions | Abnormally Dry |