July in Largo is the rainiest and the hottest month of the year. In July, the weather in Largo is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Largo has 13 rainy, 11 sunny, 5 partly cloudy, and 2 cloudy days in July. The rains are usually heavy. July as well as January, February, March, and August is considered the most uncomfortable time to visit Largo.