January in Kladno is the snowiest and the coldest month of the year. In January, the weather in Kladno is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, Kladno has 12 partly cloudy, 9 cloudy, 5 rainy, 3 sunny, and 2 snowy days in January. The rains are usually light. January as well as February, March, October, and November is considered the most uncomfortable time to visit Kladno.