January in Ust-Bolshereck is the sunniest and the most freezing month of the year. In January, the weather in Ust-Bolshereck is typically freezing. Average daily high temperature in January is about 6 degrees below zero. On average, Ust-Bolshereck has 11 cloudy, 10 snowy, 5 sunny, and 5 partly cloudy days in January. The snowfalls are usually light.