January in Slomniki is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Slomniki is typically freezing. Average daily high temperature in January is about zero. On average, Slomniki has 13 snowy, 9 cloudy, 6 rainy, and 3 sunny days in January. The snowfalls are usually light. January as well as February, March, April, and May is considered the most uncomfortable time to visit Slomniki.