In December, the weather in Ust-Kazha is typically freezing. Average daily high temperature in December is about 9 degrees below zero. On average, Ust-Kazha has 18 cloudy, 11 snowy, and 2 sunny days in December. The snowfalls are usually light. December as well as January, February, April, and October is considered the most uncomfortable time to visit Ust-Kazha.