Chetwynd, British Columbia climate data is summarized below. Average annual temperatures range from 27.7 °F (low) to 44.2 °F (high). Annual precipitation averages 15 Inches. Chetwynd is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Aug. 21 - Aug. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -24.6 °F | -20.6 °F | 0 in. |
| February | -24.6 °F | -19.9 °F | 0 in. |
| March | -23.7 °F | -18.3 °F | 0 in. |
| April | -19.3 °F | -14.2 °F | 609.6 in. |
| May | -16.3 °F | -10.1 °F | 1549.4 in. |
| June | -13.9 °F | -8 °F | 2489.2 in. |
| July | -12.4 °F | -6.2 °F | 1701.8 in. |
| August | -13.1 °F | -6.6 °F | 1447.8 in. |
| September | -15.2 °F | -9.5 °F | 1092.2 in. |
| October | -18 °F | -14.1 °F | 812.8 in. |
| November | -22.7 °F | -19.1 °F | 0 in. |
| December | -25.6 °F | -21.6 °F | 0 in. |
| Annual | 27.7 °F | 44.2 °F | 15.03 in. |
| Average First Frost Date | Aug. 21 - Aug. 31 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Moderate Drought |