Redwater, Alberta climate data is summarized below. Average annual temperatures range from -2 °C (low) to 8.7 °C (high). Annual precipitation averages 399 Millimeters. Redwater is located in USDA Plant Hardiness Zone 3a. 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 | -15.25 °C | -6.25 °C | 0 mm |
| February | -14.35 °C | -4.83 °C | 0 mm |
| March | -9.96 °C | 0 °C | 0 mm |
| April | -1.91 °C | 8.77 °C | 35 mm |
| May | 4.35 °C | 17.42 °C | 62 mm |
| June | 9.38 °C | 21.64 °C | 75 mm |
| July | 12.2 °C | 24.27 °C | 109 mm |
| August | 10.54 °C | 23.47 °C | 51 mm |
| September | 5.53 °C | 18.93 °C | 37 mm |
| October | 0.39 °C | 10.48 °C | 29 mm |
| November | -7.8 °C | -1.03 °C | 1 mm |
| December | -16.37 °C | -8.28 °C | 0 mm |
| Annual | -2 °C | 8.7 °C | 399 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 3a : -40°C to -37.2°C |
| Current Drought Conditions | Normal |