January weather forecast in Oshawa

January in Oshawa is the snowiest, the windiest, and the most freezing month of the year. In January, the weather in Oshawa is typically freezing. Average daily high temperature in January is about 3 degrees below zero. On average, Oshawa has 15 snowy, 12 cloudy, 3 sunny, and 1 partly cloudy day in January. The snowfalls are usually moderate.