December in Carrollton is the cloudiest month of the year. In December, the weather in Carrollton is typically warm. Average daily high temperature in December is about 12 degrees above zero. On average, Carrollton has 15 partly cloudy, 11 sunny, and 5 rainy days in December. The rains are usually light. December as well as January and August is considered the most uncomfortable time to visit Carrollton.