December in Sainte-Foy is the snowiest month of the year. In December, the weather in Sainte-Foy is typically freezing. Average daily high temperature in December is about 4 degrees below zero. On average, Sainte-Foy has 15 snowy, 9 cloudy, 3 sunny, 2 rainy, and 2 partly cloudy days in December. The snowfalls are usually heavy.