In December, the weather in Winkler is typically freezing. Average daily high temperature in December is about 9 degrees below zero. On average, Winkler has 22 cloudy, 4 sunny, 3 partly cloudy, and 2 snowy days in December. The snowfalls are usually light. December as well as January, February, March, and April is considered the most uncomfortable time to visit Winkler.