August in Laredo is the warmest month of the year. In August, the weather in Laredo is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, Laredo has 14 sunny, 13 partly cloudy, 3 rainy, and 1 cloudy day in August. The rains are usually light. August as well as September is considered the most comfortable time to visit Laredo.