Wembley, Alberta climate data is summarized below. Average annual temperatures range from -3.1 °C (low) to 7.6 °C (high). Annual precipitation averages 382 Millimeters. Wembley 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.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.14 °C | -6.73 °C | 0 mm |
| February | -13.32 °C | -4.55 °C | 0 mm |
| March | -11.05 °C | -0.63 °C | 0 mm |
| April | -2.94 °C | 7.81 °C | 29 mm |
| May | 3.02 °C | 16.49 °C | 47 mm |
| June | 7.81 °C | 20.09 °C | 86 mm |
| July | 9.87 °C | 23.14 °C | 76 mm |
| August | 8.8 °C | 22.2 °C | 59 mm |
| September | 4.12 °C | 17.22 °C | 44 mm |
| October | -0.88 °C | 8.36 °C | 41 mm |
| November | -9.78 °C | -2.48 °C | 0 mm |
| December | -17.74 °C | -9.15 °C | 0 mm |
| Annual | -3.1 °C | 7.6 °C | 382 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| 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 |