December in Selenginsk is the snowiest month of the year. In December, the weather in Selenginsk is typically freezing. Average daily high temperature in December is about 13 degrees below zero. On average, Selenginsk has 19 cloudy, 9 snowy, and 3 sunny days in December. The snowfalls are usually light. December as well as January and February is considered the most uncomfortable time to visit Selenginsk.