December in Aberdeen is the coldest month of the year. In December, the weather in Aberdeen is typically cold. Average daily high temperature in December is about 6 degrees above zero. On average, Aberdeen has 23 rainy, 5 sunny, 2 cloudy, and 1 partly cloudy day in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Aberdeen.