January weather forecast in Slonim

January in Slonim is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Slonim is typically freezing. Average daily high temperature in January is about 3 degrees below zero. On average, Slonim has 19 snowy, 11 cloudy, and 1 sunny day in January. The snowfalls are usually light.