January in Sanok is the snowiest, the windiest, and the most freezing month of the year. In January, the weather in Sanok is typically freezing. Average daily high temperature in January is about zero. On average, Sanok has 12 cloudy, 6 partly cloudy, 5 snowy, 4 rainy, and 4 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 Sanok.