January in Yertom is the most freezing month of the year. In January, the weather in Yertom is typically freezing. Average daily high temperature in January is about 12 degrees below zero. On average, Yertom has 15 cloudy, 14 snowy, and 2 sunny days in January. The snowfalls are usually light. January as well as February, April, May, and September is considered the most uncomfortable time to visit Yertom.