Winkler, Manitoba climate data is summarized below. Average annual temperatures range from -1.2 °C (low) to 9.1 °C (high). Annual precipitation averages 356 Millimeters. Winkler is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -18.77 °C | -9.81 °C | 0 mm |
| February | -17.85 °C | -8.59 °C | 0 mm |
| March | -8.65 °C | 0.41 °C | 5 mm |
| April | -0.97 °C | 9.78 °C | 13 mm |
| May | 5.37 °C | 17.51 °C | 42 mm |
| June | 11.81 °C | 22.88 °C | 72 mm |
| July | 14.27 °C | 25.52 °C | 103 mm |
| August | 12.97 °C | 25.34 °C | 72 mm |
| September | 8.16 °C | 20.55 °C | 41 mm |
| October | 2.04 °C | 11.95 °C | 8 mm |
| November | -6.25 °C | 1.92 °C | 0 mm |
| December | -16.21 °C | -8.61 °C | 0 mm |
| Annual | -1.2 °C | 9.1 °C | 356 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |