Banff, Alberta climate data is summarized below. Average annual temperatures range from 23 °F (low) to 45.8 °F (high). Annual precipitation averages 15.6 Inches. 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 | -25.2 °F | -19.5 °F | 0 in. |
| February | -25.5 °F | -18.7 °F | 0 in. |
| March | -23.8 °F | -16.7 °F | 0 in. |
| April | -22.3 °F | -14.7 °F | 0 in. |
| May | -18.7 °F | -11.3 °F | 1346.2 in. |
| June | -16 °F | -8.6 °F | 3276.6 in. |
| July | -14.2 °F | -5.9 °F | 2235.2 in. |
| August | -14.9 °F | -6.4 °F | 1701.8 in. |
| September | -16.9 °F | -9 °F | 1066.8 in. |
| October | -19.5 °F | -13.2 °F | 406.4 in. |
| November | -23.4 °F | -17.9 °F | 0 in. |
| December | -26.4 °F | -20.6 °F | 0 in. |
| Annual | 23 °F | 45.8 °F | 15.55 in. |
| 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°F to -35°F |
| Current Drought Conditions | Normal |