January weather forecast in Trondheim

January in Trondheim is the most freezing month of the year. In January, the weather in Trondheim is typically freezing. Average daily high temperature in January is about 1 degree below zero. On average, Trondheim has 10 snowy, 7 partly cloudy, 6 sunny, 5 cloudy, and 3 rainy days in January. The snowfalls are usually heavy.