January in Mosty is the snowiest and the most freezing month of the year. In January, the weather in Mosty is typically freezing. Average daily high temperature in January is about 9 degrees below zero. On average, Mosty has 16 cloudy, 10 snowy, 4 sunny, and 1 partly cloudy day in January. The snowfalls are usually light. January as well as February, March, and November is considered the most uncomfortable time to visit Mosty.