December in North Chicago is the snowiest month of the year. In December, the weather in North Chicago is typically freezing. Average daily high temperature in December is about zero. On average, North Chicago has 11 cloudy, 8 snowy, 5 sunny, 4 rainy, and 3 partly cloudy days in December. The snowfalls are usually moderate. December as well as March and April is considered the most uncomfortable time to visit North Chicago.