McDame, British Columbia climate data is summarized below. Average annual temperatures range from 19.3 °F (low) to 33.2 °F (high). Annual precipitation averages 7.8 Inches. McDame 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 Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -27.7 °F | -23.4 °F | 0 in. |
| February | -27.7 °F | -22.7 °F | 0 in. |
| March | -27.7 °F | -22.5 °F | 0 in. |
| April | -23.3 °F | -18.6 °F | 50.8 in. |
| May | -18.6 °F | -14.1 °F | 508 in. |
| June | -15.6 °F | -10.7 °F | 1066.8 in. |
| July | -14.6 °F | -9.8 °F | 1066.8 in. |
| August | -15.1 °F | -10.4 °F | 939.8 in. |
| September | -17.4 °F | -13.7 °F | 914.4 in. |
| October | -20 °F | -17.6 °F | 457.2 in. |
| November | -25.1 °F | -22 °F | 0 in. |
| December | -27.6 °F | -23.6 °F | 0 in. |
| Annual | 19.3 °F | 33.2 °F | 7.76 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| 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 | Normal |