Klemtu, British Columbia climate data is summarized below. Average annual temperatures range from 5.1 °C (low) to 10.3 °C (high). Annual precipitation averages 3683 Millimeters. Klemtu is located in USDA Plant Hardiness Zone 7b. 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 | 0.62 °C | 4.54 °C | 408 mm |
| February | 0.97 °C | 5.74 °C | 341 mm |
| March | 1.52 °C | 6.5 °C | 356 mm |
| April | 3.17 °C | 9.16 °C | 267 mm |
| May | 6.08 °C | 12.89 °C | 141 mm |
| June | 8.58 °C | 14.31 °C | 167 mm |
| July | 10.88 °C | 17.17 °C | 128 mm |
| August | 11.05 °C | 17.73 °C | 162 mm |
| September | 9.08 °C | 14.93 °C | 303 mm |
| October | 6.22 °C | 10.63 °C | 502 mm |
| November | 2.6 °C | 6.55 °C | 484 mm |
| December | 0.02 °C | 3.95 °C | 424 mm |
| Annual | 5.1 °C | 10.3 °C | 3683 mm |
| 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 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |