Osoyoos, British Columbia climate data is summarized below. Average annual temperatures range from 4.6 °C (low) to 16.2 °C (high). Annual precipitation averages 39 Millimeters. Osoyoos 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.42 °C | 1.33 °C | 0 mm |
| February | -2.58 °C | 5.17 °C | 0 mm |
| March | 0.29 °C | 10.98 °C | 1 mm |
| April | 3.55 °C | 16.65 °C | 1 mm |
| May | 8.41 °C | 22.41 °C | 5 mm |
| June | 11.64 °C | 26.13 °C | 5 mm |
| July | 15.44 °C | 31.8 °C | 14 mm |
| August | 14.8 °C | 31.05 °C | 5 mm |
| September | 9.9 °C | 25.01 °C | 3 mm |
| October | 4.66 °C | 15.94 °C | 2 mm |
| November | -0.33 °C | 6.95 °C | 1 mm |
| December | -4.71 °C | 1.3 °C | 2 mm |
| Annual | 4.6 °C | 16.2 °C | 39 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |