Sidney, British Columbia climate data is summarized below. Average annual temperatures range from 44.6 °F (low) to 57 °F (high). Annual precipitation averages 55.7 Inches. Sidney is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16.4 °F | -14 °F | 4521.2 in. |
| February | -16 °F | -13.1 °F | 3302 in. |
| March | -15.6 °F | -12.3 °F | 3708.4 in. |
| April | -14.9 °F | -10.6 °F | 1955.8 in. |
| May | -13.2 °F | -8.4 °F | 1701.8 in. |
| June | -11.8 °F | -7.1 °F | 838.2 in. |
| July | -10.9 °F | -5.6 °F | 533.4 in. |
| August | -10.8 °F | -5.6 °F | 762 in. |
| September | -11.9 °F | -7.4 °F | 2006.6 in. |
| October | -13.5 °F | -10.2 °F | 4368.8 in. |
| November | -15.3 °F | -12.5 °F | 6629.4 in. |
| December | -16.4 °F | -14.1 °F | 5588 in. |
| Annual | 44.6 °F | 57 °F | 55.68 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |