Streatham, British Columbia climate data is summarized below. Average annual temperatures range from 28.6 °F (low) to 44.3 °F (high). Annual precipitation averages 11.5 Inches. 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 | -23.5 °F | -19.6 °F | 0 in. |
| February | -23.5 °F | -18.7 °F | 0 in. |
| March | -22.9 °F | -17.4 °F | 0 in. |
| April | -20.2 °F | -15.2 °F | 685.8 in. |
| May | -16.8 °F | -11 °F | 965.2 in. |
| June | -14.9 °F | -9.4 °F | 1295.4 in. |
| July | -13.3 °F | -7.5 °F | 1041.4 in. |
| August | -13.6 °F | -7.4 °F | 889 in. |
| September | -15.6 °F | -10.1 °F | 889 in. |
| October | -17.7 °F | -14 °F | 1422.4 in. |
| November | -20.6 °F | -17.7 °F | 228.6 in. |
| December | -23.3 °F | -19.9 °F | 0 in. |
| Annual | 28.6 °F | 44.3 °F | 11.49 in. |
| 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 : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |