July in Maricopa is the rainiest and the cloudiest month of the year. In July, the weather in Maricopa is typically hot. Average daily high temperature in July is about 38 degrees above zero. On average, Maricopa has 15 partly cloudy, 11 sunny, 3 rainy, and 2 cloudy days in July. The rains are usually heavy. July as well as June and August is considered the most uncomfortable time to visit Maricopa.