December in Rychnov nad Kneznou is the windiest month of the year. In December, the weather in Rychnov nad Kneznou is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Rychnov nad Kneznou has 16 cloudy, 4 snowy, 4 sunny, 4 partly cloudy, and 3 rainy days in December. The snowfalls are usually light. December as well as January, February, March, and November is considered the most uncomfortable time to visit Rychnov nad Kneznou.