January in Straz pod Ralskem is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Straz pod Ralskem is typically freezing. Average daily high temperature in January is about zero. On average, Straz pod Ralskem has 20 snowy, 6 rainy, 3 cloudy, and 2 sunny days in January. The snowfalls are usually moderate. January as well as February, March, April, and May is considered the most uncomfortable time to visit Straz pod Ralskem.