Winkler, Manitoba climate data is summarized below. Average annual temperatures range from 29.9 °F (low) to 48.3 °F (high). Annual precipitation averages 14 Inches. 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 | -28.2 °F | -23.2 °F | 0 in. |
| February | -27.7 °F | -22.6 °F | 0 in. |
| March | -22.6 °F | -17.6 °F | 127 in. |
| April | -18.3 °F | -12.3 °F | 330.2 in. |
| May | -14.8 °F | -8.1 °F | 1066.8 in. |
| June | -11.2 °F | -5.1 °F | 1828.8 in. |
| July | -9.9 °F | -3.6 °F | 2616.2 in. |
| August | -10.6 °F | -3.7 °F | 1828.8 in. |
| September | -13.2 °F | -6.4 °F | 1041.4 in. |
| October | -16.6 °F | -11.1 °F | 203.2 in. |
| November | -21.3 °F | -16.7 °F | 0 in. |
| December | -26.8 °F | -22.6 °F | 0 in. |
| Annual | 29.9 °F | 48.3 °F | 14 in. |
| 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 : -30°F to -25°F |
| Current Drought Conditions | Normal |