December in Seltso-Sergievka is the snowiest and the windiest month of the year. In December, the weather in Seltso-Sergievka is typically freezing. Average daily high temperature in December is about 3 degrees below zero. On average, Seltso-Sergievka has 23 snowy, 7 cloudy, and 1 sunny day in December. The snowfalls are usually moderate.