Blackfalds, Alberta climate data is summarized below. Average annual temperatures range from -3.2 °C (low) to 8.4 °C (high). Annual precipitation averages 507 Millimeters. Blackfalds 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 | -15.17 °C | -6.05 °C | 0 mm |
| February | -14.87 °C | -4.34 °C | 0 mm |
| March | -9.86 °C | 0.4 °C | 0 mm |
| April | -3.49 °C | 8.21 °C | 38 mm |
| May | 2.57 °C | 16.38 °C | 85 mm |
| June | 7.35 °C | 19.71 °C | 122 mm |
| July | 9.86 °C | 22.85 °C | 107 mm |
| August | 8.27 °C | 22.14 °C | 74 mm |
| September | 3.66 °C | 18.27 °C | 51 mm |
| October | -1.56 °C | 10.36 °C | 30 mm |
| November | -9.04 °C | -0.3 °C | 0 mm |
| December | -16.34 °C | -7.4 °C | 0 mm |
| Annual | -3.2 °C | 8.4 °C | 507 mm |
| 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 : -37.2°C to -34.4°C |
| Current Drought Conditions | Moderate Drought |