January weather forecast in Namsos

January in Namsos is the most freezing month of the year. In January, the weather in Namsos is typically freezing. Average daily high temperature in January is about 2 degrees below zero. On average, Namsos has 16 snowy, 6 cloudy, 5 sunny, 2 rainy, and 2 partly cloudy days in January. The snowfalls are usually heavy.