December in La Ronge is the most freezing month of the year. In December, the weather in La Ronge is typically freezing. Average daily high temperature in December is about 13 degrees below zero. On average, La Ronge has 30 cloudy and 1 snowy day in December. The snowfalls are usually light. December as well as January, February, April, and October is considered the most uncomfortable time to visit La Ronge.