January in Marshfield is the cloudiest and the most freezing month of the year. In January, the weather in Marshfield is typically freezing. Average daily high temperature in January is about 8 degrees below zero. On average, Marshfield has 23 cloudy, 6 snowy, and 2 sunny days in January. The snowfalls are usually light. January as well as March, April, and November is considered the most uncomfortable time to visit Marshfield.