Barrhead, Alberta climate data is summarized below. Average annual temperatures range from 27.5 °F (low) to 47.5 °F (high). Annual precipitation averages 15.9 Inches. 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 | -26.3 °F | -21.3 °F | 0 in. |
| February | -25.8 °F | -20.1 °F | 0 in. |
| March | -23.5 °F | -17.5 °F | 0 in. |
| April | -19 °F | -12.8 °F | 762 in. |
| May | -15.6 °F | -8.1 °F | 1930.4 in. |
| June | -12.9 °F | -5.9 °F | 1981.2 in. |
| July | -11.5 °F | -4.4 °F | 2565.4 in. |
| August | -12.4 °F | -4.9 °F | 1168.4 in. |
| September | -15.2 °F | -7.6 °F | 1016 in. |
| October | -18 °F | -12.2 °F | 838.2 in. |
| November | -22.4 °F | -18.5 °F | 0 in. |
| December | -27.6 °F | -22.6 °F | 0 in. |
| Annual | 27.5 °F | 47.5 °F | 15.9 in. |
| 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 : -35°F to -30°F |
| Current Drought Conditions | Normal |