January weather forecast in Green Bay

January in Green Bay is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Green Bay is typically freezing. Average daily high temperature in January is about 3 degrees below zero. On average, Green Bay has 10 partly cloudy, 8 sunny, 8 cloudy, and 5 snowy days in January. The snowfalls are usually light.