Barrhead, Alberta climate data is summarized below. Average annual temperatures range from -2.5 °C (low) to 8.6 °C (high). Annual precipitation averages 404 Millimeters. Barrhead is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.37 °C | -6.27 °C | 0 mm |
| February | -14.37 °C | -4.2 °C | 0 mm |
| March | -10.22 °C | 0.44 °C | 0 mm |
| April | -2.14 °C | 8.89 °C | 30 mm |
| May | 3.94 °C | 17.34 °C | 76 mm |
| June | 8.71 °C | 21.42 °C | 78 mm |
| July | 11.38 °C | 24.13 °C | 101 mm |
| August | 9.77 °C | 23.16 °C | 46 mm |
| September | 4.72 °C | 18.41 °C | 40 mm |
| October | -0.45 °C | 10.04 °C | 33 mm |
| November | -8.29 °C | -1.21 °C | 0 mm |
| December | -17.62 °C | -8.68 °C | 0 mm |
| Annual | -2.5 °C | 8.6 °C | 404 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |