January weather forecast in Sundsvall

January in Sundsvall is the most freezing month of the year. In January, the weather in Sundsvall is typically freezing. Average daily high temperature in January is about 3 degrees below zero. On average, Sundsvall has 13 snowy, 11 cloudy, 5 sunny, and 2 partly cloudy days in January. The snowfalls are usually light.