Wynyard, Saskatchewan climate data is summarized below. Average annual temperatures range from -2.9 °C (low) to 7 °C (high). Annual precipitation averages 469 Millimeters. Wynyard 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 | -19.34 °C | -10.08 °C | 0 mm |
| February | -19.68 °C | -9.87 °C | 0 mm |
| March | -11.36 °C | -1.96 °C | 0 mm |
| April | -2.69 °C | 7.57 °C | 29 mm |
| May | 4.01 °C | 16.17 °C | 50 mm |
| June | 9.94 °C | 20.43 °C | 124 mm |
| July | 12.66 °C | 23.09 °C | 114 mm |
| August | 11.27 °C | 22.41 °C | 66 mm |
| September | 6.48 °C | 18.06 °C | 51 mm |
| October | 0.51 °C | 9.44 °C | 35 mm |
| November | -8.38 °C | -0.73 °C | 0 mm |
| December | -18.16 °C | -10.18 °C | 0 mm |
| Annual | -2.9 °C | 7 °C | 469 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 |