December in Stuttgart is the rainiest and the windiest month of the year. In December, the weather in Stuttgart is typically cold. Average daily high temperature in December is about 4 degrees above zero. On average, Stuttgart has 16 rainy, 8 cloudy, 5 sunny, and 2 partly cloudy days in December. The rains are usually moderate. December as well as January, February, March, and November is considered the most uncomfortable time to visit Stuttgart.