Three Hills, Alberta climate data is summarized below. Average annual temperatures range from -2.5 °C (low) to 9.4 °C (high). Annual precipitation averages 453 Millimeters. Three Hills 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.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.61 °C | -4.71 °C | 0 mm |
| February | -14.47 °C | -3.92 °C | 0 mm |
| March | -8.27 °C | 2.58 °C | 0 mm |
| April | -2.65 °C | 9.59 °C | 39 mm |
| May | 3.32 °C | 16.59 °C | 76 mm |
| June | 8.23 °C | 20.21 °C | 120 mm |
| July | 10.86 °C | 23.63 °C | 86 mm |
| August | 9.36 °C | 22.82 °C | 58 mm |
| September | 4.63 °C | 18.86 °C | 46 mm |
| October | -1.2 °C | 11.32 °C | 28 mm |
| November | -8.63 °C | 1.54 °C | 0 mm |
| December | -16 °C | -6.25 °C | 0 mm |
| Annual | -2.5 °C | 9.4 °C | 453 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| 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 | Abnormally Dry |