July in Prescott is the rainiest and the cloudiest month of the year. In July, the weather in Prescott is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, Prescott has 14 rainy, 9 sunny, 6 partly cloudy, and 2 cloudy days in July. The rains are usually heavy. July as well as January and December is considered the most uncomfortable time to visit Prescott.