January in Dillingen an der Donau is the snowiest, the cloudiest, and the coldest month of the year. In January, the weather in Dillingen an der Donau is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, Dillingen an der Donau has 13 rainy, 12 cloudy, 3 sunny, 2 snowy, and 1 partly cloudy day in January. The rains are usually moderate. January as well as February, March, April, and May is considered the most uncomfortable time to visit Dillingen an der Donau.