December in Sizyabsk is the windiest month of the year. In December, the weather in Sizyabsk is typically freezing. Average daily high temperature in December is about 11 degrees below zero. On average, Sizyabsk has 17 snowy, 13 cloudy, and 1 sunny day in December. The snowfalls are usually light. December as well as January, February, April, and May is considered the most uncomfortable time to visit Sizyabsk.