In October, the weather in Ust-Ilych is typically cold. Average daily high temperature in October is about 3 degrees above zero. On average, Ust-Ilych has 15 cloudy, 8 rainy, 3 sunny, 3 partly cloudy, and 2 snowy days in October. The rains are usually moderate. October as well as January, February, May, and September is considered the most uncomfortable time to visit Ust-Ilych.