January in Donauworth is the cloudiest and the coldest month of the year. In January, the weather in Donauworth is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, Donauworth has 14 rainy, 14 cloudy, and 3 sunny 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 Donauworth.