In December, the weather in Severomuysk is typically freezing. Average daily high temperature in December is about 21 degrees below zero. On average, Severomuysk has 14 cloudy, 11 partly cloudy, 5 sunny, and 1 snowy day in December. The snowfalls are usually light. December as well as January, February, March, and May is considered the most uncomfortable time to visit Severomuysk.