January in Mont Joli is the windiest and the most freezing month of the year. In January, the weather in Mont Joli is typically freezing. Average daily high temperature in January is about 8 degrees below zero. On average, Mont Joli has 17 snowy, 13 cloudy, and 1 sunny day in January. The snowfalls are usually moderate. January as well as February, April, May, and October is considered the most uncomfortable time to visit Mont Joli.