January weather forecast in Williston

January in Williston is the snowiest month of the year. In January, the weather in Williston is typically freezing. Average daily high temperature in January is about 6 degrees below zero. On average, Williston has 15 cloudy, 7 partly cloudy, 5 sunny, and 4 snowy days in January. The snowfalls are usually light. January as well as March, April, November, and December is considered the most uncomfortable time to visit Williston.