December in Kudelnyy Klyuch is the snowiest and the windiest month of the year. In December, the weather in Kudelnyy Klyuch is typically freezing. Average daily high temperature in December is about 11 degrees below zero. On average, Kudelnyy Klyuch has 12 snowy, 12 cloudy, 4 partly cloudy, and 3 sunny days in December. The snowfalls are usually light. December as well as January, February, and October is considered the most uncomfortable time to visit Kudelnyy Klyuch.