High River, Alberta climate data is summarized below. Average annual temperatures range from -1.4 °C (low) to 10.9 °C (high). Annual precipitation averages 393 Millimeters. High River is located in USDA Plant Hardiness Zone 4a. 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 | -11.74 °C | -1.44 °C | 0 mm |
| February | -10.84 °C | -0.15 °C | 0 mm |
| March | -6.28 °C | 4.87 °C | 0 mm |
| April | -2.26 °C | 10.22 °C | 30 mm |
| May | 3.11 °C | 16.18 °C | 80 mm |
| June | 7.58 °C | 20.02 °C | 105 mm |
| July | 10.82 °C | 24.3 °C | 61 mm |
| August | 9.28 °C | 23.76 °C | 43 mm |
| September | 4.67 °C | 19.66 °C | 41 mm |
| October | -0.4 °C | 12.33 °C | 33 mm |
| November | -6.77 °C | 3.65 °C | 0 mm |
| December | -13.42 °C | -3.1 °C | 0 mm |
| Annual | -1.4 °C | 10.9 °C | 393 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 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |