July in Carrollton is the rainiest, the cloudiest, and the hottest month of the year. In July, the weather in Carrollton is typically hot. Average daily high temperature in July is about 30 degrees above zero. On average, Carrollton has 18 rainy, 6 sunny, 5 partly cloudy, and 2 cloudy days in July. The rains are usually heavy. July as well as January, June, August, and December is considered the most uncomfortable time to visit Carrollton.