January in Ust-Usa is the most freezing month of the year. In January, the weather in Ust-Usa is typically freezing. Average daily high temperature in January is about 15 degrees below zero. On average, Ust-Usa has 17 cloudy, 12 snowy, and 2 sunny days in January. The snowfalls are usually light. January as well as February, May, September, and October is considered the most uncomfortable time to visit Ust-Usa.