August weather forecast in Del Rio

August in Del Rio is the hottest month of the year. In August, the weather in Del Rio is typically hot. Average daily high temperature in August is about 35 degrees above zero. On average, Del Rio has 18 sunny, 10 partly cloudy, and 3 rainy days in August. The rains are usually light. August as well as June and July is considered the most uncomfortable time to visit Del Rio.