Sylvan Lake, Alberta climate data is summarized below. Average annual temperatures range from -3.5 °C (low) to 8.4 °C (high). Annual precipitation averages 506 Millimeters. Sylvan Lake is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.23 °C | -5.64 °C | 0 mm |
| February | -14.69 °C | -3.77 °C | 0 mm |
| March | -10.01 °C | 0.56 °C | 0 mm |
| April | -3.83 °C | 7.95 °C | 36 mm |
| May | 2.23 °C | 15.94 °C | 87 mm |
| June | 6.95 °C | 19.34 °C | 127 mm |
| July | 9.54 °C | 22.68 °C | 106 mm |
| August | 7.96 °C | 22.04 °C | 70 mm |
| September | 3.37 °C | 18.09 °C | 50 mm |
| October | -1.98 °C | 10.25 °C | 30 mm |
| November | -9.34 °C | -0.23 °C | 0 mm |
| December | -16.47 °C | -7.14 °C | 0 mm |
| Annual | -3.5 °C | 8.4 °C | 506 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Moderate Drought |