January in Kostelec Nad Cernymi Lesy is the snowiest, the cloudiest, and the coldest month of the year. In January, the weather in Kostelec Nad Cernymi Lesy is typically cold. Average daily high temperature in January is about 1 degree above zero. On average, Kostelec Nad Cernymi Lesy has 14 cloudy, 10 rainy, 3 snowy, 3 sunny, and 1 partly cloudy day in January. The rains are usually light. January as well as February, May, November, and December is considered the most uncomfortable time to visit Kostelec Nad Cernymi Lesy.