January weather forecast in Joliet

January in Joliet is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Joliet is typically freezing. Average daily high temperature in January is about 2 degrees below zero. On average, Joliet has 17 cloudy, 8 snowy, 4 sunny, 1 rainy, and 1 partly cloudy day in January. The snowfalls are usually moderate.