July in Altamonte Springs is the cloudiest month of the year. In July, the weather in Altamonte Springs is typically hot. Average daily high temperature in July is about 32 degrees above zero. On average, Altamonte Springs has 23 rainy, 5 partly cloudy, and 3 sunny days in July. The rains are usually heavy. July as well as June, August, and September is considered the most uncomfortable time to visit Altamonte Springs.