Armstrong, British Columbia climate data is summarized below. Average annual temperatures range from 3.3 °C (low) to 15.1 °C (high). Annual precipitation averages 338 Millimeters. Armstrong is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.87 °C | 1 °C | 0 mm |
| February | -4.79 °C | 3.6 °C | 1 mm |
| March | -1.85 °C | 8.27 °C | 16 mm |
| April | 1.97 °C | 14.39 °C | 25 mm |
| May | 7.7 °C | 21.95 °C | 49 mm |
| June | 11.23 °C | 25.51 °C | 62 mm |
| July | 13.77 °C | 30.27 °C | 33 mm |
| August | 12.8 °C | 29.61 °C | 27 mm |
| September | 8.25 °C | 23.55 °C | 38 mm |
| October | 3.68 °C | 15.39 °C | 53 mm |
| November | -1.2 °C | 6.85 °C | 34 mm |
| December | -5.78 °C | 0.88 °C | 0 mm |
| Annual | 3.3 °C | 15.1 °C | 338 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |