December in Saskatoon is the most freezing month of the year. In December, the weather in Saskatoon is typically freezing. Average daily high temperature in December is about 10 degrees below zero. On average, Saskatoon has 26 cloudy, 3 sunny, 1 snowy, and 1 partly cloudy day in December. The snowfalls are usually light. December as well as January, February, and April is considered the most uncomfortable time to visit Saskatoon.