Summerland, British Columbia climate data is summarized below. Average annual temperatures range from 4.1 °C (low) to 15.2 °C (high). Annual precipitation averages 180 Millimeters. Summerland is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.04 °C | 2.03 °C | 0 mm |
| February | -3.02 °C | 5.01 °C | 0 mm |
| March | -0.52 °C | 9.9 °C | 0 mm |
| April | 2.54 °C | 15.23 °C | 10 mm |
| May | 7.35 °C | 21.12 °C | 29 mm |
| June | 10.68 °C | 24.52 °C | 36 mm |
| July | 14.22 °C | 29.6 °C | 17 mm |
| August | 13.77 °C | 28.9 °C | 11 mm |
| September | 9 °C | 23.13 °C | 22 mm |
| October | 4.25 °C | 14.89 °C | 39 mm |
| November | -0.39 °C | 6.79 °C | 16 mm |
| December | -4.39 °C | 1.52 °C | 0 mm |
| Annual | 4.1 °C | 15.2 °C | 180 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |