January in Bergisch Gladbach is the coldest month of the year. In January, the weather in Bergisch Gladbach is typically cold. Average daily high temperature in January is about 4 degrees above zero. On average, Bergisch Gladbach has 15 rainy, 9 cloudy, 4 sunny, and 3 partly cloudy days in January. The rains are usually moderate. January as well as February, March, November, and December is considered the most uncomfortable time to visit Bergisch Gladbach.