December in Kingston is the cloudiest month of the year. In December, the weather in Kingston is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Kingston has 13 cloudy, 8 rainy, 4 sunny, 4 partly cloudy, and 2 snowy days in December. The rains are usually moderate. December as well as February and March is considered the most uncomfortable time to visit Kingston.