St. Albert, Alberta climate data is summarized below. Average annual temperatures range from -1.8 °C (low) to 9 °C (high). Annual precipitation averages 418 Millimeters. St. Albert is located in USDA Plant Hardiness Zone 4a. 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 | -14.63 °C | -5.85 °C | 0 mm |
| February | -13.7 °C | -4.38 °C | 0 mm |
| March | -9.13 °C | 0.72 °C | 0 mm |
| April | -1.92 °C | 9.21 °C | 35 mm |
| May | 4.29 °C | 17.66 °C | 69 mm |
| June | 9.13 °C | 21.5 °C | 79 mm |
| July | 11.84 °C | 24.13 °C | 112 mm |
| August | 10.22 °C | 23.46 °C | 56 mm |
| September | 5.5 °C | 19.14 °C | 37 mm |
| October | 0.28 °C | 10.68 °C | 30 mm |
| November | -7.49 °C | -0.71 °C | 0 mm |
| December | -15.79 °C | -7.83 °C | 0 mm |
| Annual | -1.8 °C | 9 °C | 418 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |