December in Angleton is the cloudiest month of the year. In December, the weather in Angleton is typically warm. Average daily high temperature in December is about 17 degrees above zero. On average, Angleton has 13 rainy, 9 sunny, 7 partly cloudy, and 2 cloudy days in December. The rains are usually heavy. December as well as January, June, July, and August is considered the most uncomfortable time to visit Angleton.