January weather forecast in Olsztyn

January in Olsztyn is the snowiest and the most freezing month of the year. In January, the weather in Olsztyn is typically freezing. Average daily high temperature in January is about 2 degrees below zero. On average, Olsztyn has 16 snowy, 11 cloudy, 2 rainy, and 2 sunny days in January. The snowfalls are usually light.