In September, the weather in Ust-Belaya is typically cold. Average daily high temperature in September is about 8 degrees above zero. On average, Ust-Belaya has 9 rainy, 8 cloudy, 8 partly cloudy, and 5 sunny days in September. The rains are usually moderate. September as well as January, February, March, and November is considered the most uncomfortable time to visit Ust-Belaya.