December in Anderson is the rainiest and the cloudiest month of the year. In December, the weather in Anderson is typically warm. Average daily high temperature in December is about 12 degrees above zero. On average, Anderson has 10 partly cloudy, 9 rainy, 9 sunny, and 3 cloudy days in December. The rains are usually moderate. December as well as January and February is considered the most uncomfortable time to visit Anderson.