January in Avesta is the snowiest, the windiest, and the most freezing month of the year. In January, the weather in Avesta is typically freezing. Average daily high temperature in January is about 1 degree below zero. On average, Avesta has 13 cloudy, 8 partly cloudy, 5 sunny, 4 snowy, and 1 rainy day in January. The snowfalls are usually light.