July weather forecast in Flagstaff

July in Flagstaff is the rainiest and the cloudiest month of the year. In July, the weather in Flagstaff is typically warm. Average daily high temperature in July is about 24 degrees above zero. On average, Flagstaff has 20 rainy, 8 sunny, and 3 partly cloudy days in July. The rains are usually heavy. July as well as January, February, and December is considered the most uncomfortable time to visit Flagstaff.