Summit Lake, British Columbia climate data is summarized below. Average annual temperatures range from 32.5 °F (low) to 49.7 °F (high). Annual precipitation averages 16.1 Inches. Summit Lake is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -22.3 °F | -18.1 °F | 0 in. |
| February | -21.7 °F | -17.2 °F | 0 in. |
| March | -20.5 °F | -15.7 °F | 0 in. |
| April | -18.8 °F | -13.8 °F | 482.6 in. |
| May | -16.2 °F | -10.7 °F | 1422.4 in. |
| June | -13.8 °F | -7.5 °F | 2184.4 in. |
| July | -11.8 °F | -4.7 °F | 1016 in. |
| August | -12.2 °F | -4.9 °F | 787.4 in. |
| September | -14.5 °F | -7.8 °F | 1473.2 in. |
| October | -17.1 °F | -12 °F | 2362.2 in. |
| November | -20.3 °F | -16.5 °F | 660.4 in. |
| December | -22.7 °F | -18.9 °F | 0 in. |
| Annual | 32.5 °F | 49.7 °F | 16.09 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |