Drumheller, Alberta climate data is summarized below. Average annual temperatures range from 28.9 °F (low) to 51.5 °F (high). Annual precipitation averages 16.3 Inches. Drumheller 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 | -25.8 °F | -20.1 °F | 0 in. |
| February | -25.3 °F | -19.1 °F | 0 in. |
| March | -21.9 °F | -15.4 °F | 0 in. |
| April | -18.7 °F | -11.4 °F | 914.4 in. |
| May | -15.4 °F | -7.6 °F | 1574.8 in. |
| June | -12.8 °F | -5.6 °F | 2641.6 in. |
| July | -11.3 °F | -3.6 °F | 2006.6 in. |
| August | -12 °F | -4 °F | 1574.8 in. |
| September | -14.8 °F | -6.3 °F | 1066.8 in. |
| October | -18.1 °F | -10.7 °F | 711.2 in. |
| November | -22.4 °F | -16.5 °F | 0 in. |
| December | -26.4 °F | -21 °F | 0 in. |
| Annual | 28.9 °F | 51.5 °F | 16.25 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 |