Drumheller, Alberta climate data is summarized below. Average annual temperatures range from -1.7 °C (low) to 10.8 °C (high). Annual precipitation averages 413 Millimeters. 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 | -14.37 °C | -4.17 °C | 0 mm |
| February | -13.54 °C | -2.35 °C | 0 mm |
| March | -7.36 °C | 4.29 °C | 0 mm |
| April | -1.67 °C | 11.53 °C | 36 mm |
| May | 4.28 °C | 18.34 °C | 62 mm |
| June | 8.98 °C | 21.92 °C | 104 mm |
| July | 11.64 °C | 25.53 °C | 79 mm |
| August | 10.37 °C | 24.81 °C | 62 mm |
| September | 5.31 °C | 20.66 °C | 42 mm |
| October | -0.61 °C | 12.72 °C | 28 mm |
| November | -8.29 °C | 2.35 °C | 0 mm |
| December | -15.48 °C | -5.75 °C | 0 mm |
| Annual | -1.7 °C | 10.8 °C | 413 mm |
| 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 : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |