Streatham, British Columbia climate data is summarized below. Average annual temperatures range from -1.9 °C (low) to 6.8 °C (high). Annual precipitation averages 292 Millimeters. Streatham is located in USDA Plant Hardiness Zone 3b. 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 | -10.28 °C | -3.19 °C | 0 mm |
| February | -10.21 °C | -1.69 °C | 0 mm |
| March | -9.14 °C | 0.69 °C | 0 mm |
| April | -4.3 °C | 4.6 °C | 27 mm |
| May | 1.73 °C | 12.26 °C | 38 mm |
| June | 5.18 °C | 15.08 °C | 51 mm |
| July | 8.04 °C | 18.59 °C | 41 mm |
| August | 7.51 °C | 18.68 °C | 35 mm |
| September | 4 °C | 13.83 °C | 35 mm |
| October | 0.14 °C | 6.81 °C | 56 mm |
| November | -5.15 °C | 0.08 °C | 9 mm |
| December | -9.93 °C | -3.85 °C | 0 mm |
| Annual | -1.9 °C | 6.8 °C | 292 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 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Abnormally Dry |