January in Mirny is the snowiest, the cloudiest, and the coldest month of the year. In January, the weather in Mirny is typically cold. Average daily high temperature in January is about 3 degrees above zero. On average, Mirny has 15 cloudy, 8 partly cloudy, 5 rainy, 2 sunny, and 1 snowy day in January. The rains are usually light. January as well as February, March, November, and December is considered the most uncomfortable time to visit Mirny.