January weather forecast in Ontario

January in Ontario is the snowiest and the coldest month of the year. In January, the weather in Ontario is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, Ontario has 9 cloudy, 9 partly cloudy, 6 sunny, 5 rainy, and 2 snowy days in January. The rains are usually moderate. January as well as February, November, and December is considered the most uncomfortable time to visit Ontario.