January in Mirny is the most freezing month of the year. In January, the weather in Mirny is typically freezing. Average daily high temperature in January is about 14 degrees below zero. On average, Mirny has 10 snowy, 10 cloudy, 6 partly cloudy, and 5 sunny days in January. The snowfalls are usually light. January as well as February, October, and December is considered the most uncomfortable time to visit Mirny.