January in Rhinelander is the most freezing month of the year. In January, the weather in Rhinelander is typically freezing. Average daily high temperature in January is about 9 degrees below zero. On average, Rhinelander has 21 cloudy, 9 snowy, and 1 sunny day in January. The snowfalls are usually light. January as well as March, April, May, and October is considered the most uncomfortable time to visit Rhinelander.