Fort Nelson, British Columbia climate data is summarized below. Average annual temperatures range from -5.3 °C (low) to 5 °C (high). Annual precipitation averages 308 Millimeters. Fort Nelson is located in USDA Plant Hardiness Zone 3a. 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 | -22.13 °C | -12.22 °C | 0 mm |
| February | -19.96 °C | -8.84 °C | 0 mm |
| March | -16.09 °C | -5.85 °C | 0 mm |
| April | -4.02 °C | 5.03 °C | 15 mm |
| May | 2.66 °C | 15.41 °C | 46 mm |
| June | 7.81 °C | 21 °C | 64 mm |
| July | 10.54 °C | 22.91 °C | 84 mm |
| August | 8.41 °C | 20.75 °C | 48 mm |
| September | 4.04 °C | 14.13 °C | 32 mm |
| October | -1.39 °C | 5.79 °C | 19 mm |
| November | -12.87 °C | -6.04 °C | 0 mm |
| December | -19.98 °C | -11.61 °C | 0 mm |
| Annual | -5.3 °C | 5 °C | 308 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 3a : -40°C to -37.2°C |
| Current Drought Conditions | Abnormally Dry |