January in Barter Island is the most freezing month of the year. In January, the weather in Barter Island is typically freezing. Average daily high temperature in January is about 20 degrees below zero. On average, Barter Island has 23 cloudy, 5 sunny, 2 partly cloudy, and 1 snowy day in January. The snowfalls are usually light. January as well as February, March, April, and November is considered the most uncomfortable time to visit Barter Island.