January in Eastmain is the cloudiest and the most freezing month of the year. In January, the weather in Eastmain is typically freezing. Average daily high temperature in January is about 13 degrees below zero. On average, Eastmain has 17 snowy and 14 cloudy days in January. The snowfalls are usually moderate. January as well as February, May, September, and October is considered the most uncomfortable time to visit Eastmain.