Banff, Alberta climate data is summarized below. Average annual temperatures range from -5 °C (low) to 7.7 °C (high). Annual precipitation averages 395 Millimeters. Banff is located in USDA Plant Hardiness Zone 3a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.36 °C | -3.06 °C | 0 mm |
| February | -13.97 °C | -1.59 °C | 0 mm |
| March | -10.87 °C | 1.95 °C | 0 mm |
| April | -8.05 °C | 5.55 °C | 0 mm |
| May | -1.74 °C | 11.74 °C | 53 mm |
| June | 3.14 °C | 16.61 °C | 129 mm |
| July | 6.5 °C | 21.39 °C | 88 mm |
| August | 5.2 °C | 20.56 °C | 67 mm |
| September | 1.66 °C | 15.79 °C | 42 mm |
| October | -3.07 °C | 8.21 °C | 16 mm |
| November | -10.13 °C | -0.19 °C | 0 mm |
| December | -15.47 °C | -5.04 °C | 0 mm |
| Annual | -5 °C | 7.7 °C | 395 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 3a : -40°C to -37.2°C |
| Current Drought Conditions | Normal |