December in Fargo is the snowiest month of the year. In December, the weather in Fargo is typically freezing. Average daily high temperature in December is about 7 degrees below zero. On average, Fargo has 24 cloudy, 5 snowy, and 2 sunny days in December. The snowfalls are usually light. December as well as January, February, March, and April is considered the most uncomfortable time to visit Fargo.