December in Norrkoping is the rainiest and the windiest month of the year. In December, the weather in Norrkoping is typically cold. Average daily high temperature in December is about 1 degree above zero. On average, Norrkoping has 17 rainy, 10 cloudy, 3 sunny, and 1 partly cloudy day in December. The rains are usually light. December as well as November is considered the most uncomfortable time to visit Norrkoping.