In December, the weather in Sumon Sizimsky is typically freezing. Average daily high temperature in December is about 13 degrees below zero. On average, Sumon Sizimsky has 16 partly cloudy, 13 sunny, 1 snowy, and 1 cloudy day in December. The snowfalls are usually light. December as well as January and February is considered the most uncomfortable time to visit Sumon Sizimsky.