January in Bol'shovka is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Bol'shovka is typically freezing. Average daily high temperature in January is about 4 degrees below zero. On average, Bol'shovka has 19 cloudy, 6 snowy, 3 partly cloudy, 2 sunny, and 1 rainy day in January. The snowfalls are usually light.