In September, the weather in Ust'-Kachka is typically warm. Average daily high temperature in September is about 12 degrees above zero. On average, Ust'-Kachka has 17 rainy, 11 cloudy, and 2 sunny days in September. The rains are usually moderate. September as well as January, February, April, and October is considered the most uncomfortable time to visit Ust'-Kachka.