December in Edmonton is the most freezing month of the year. In December, the weather in Edmonton is typically freezing. Average daily high temperature in December is about 8 degrees below zero. On average, Edmonton has 15 cloudy, 9 partly cloudy, 5 sunny, and 2 snowy days in December. The snowfalls are usually light. December as well as April, June, and October is considered the most uncomfortable time to visit Edmonton.