October in Ust'-Yansk is the snowiest month of the year. In October, the weather in Ust'-Yansk is typically freezing. Average daily high temperature in October is about 10 degrees below zero. On average, Ust'-Yansk has 14 cloudy, 7 partly cloudy, 6 sunny, and 4 snowy days in October. The snowfalls are usually light. October as well as January, February, March, and April is considered the most uncomfortable time to visit Ust'-Yansk.