July in Ft McMurray is the warmest month of the year. In July, the weather in Ft McMurray is typically warm. Average daily high temperature in July is about 22 degrees above zero. On average, Ft McMurray has 16 partly cloudy, 9 sunny, 4 rainy, and 2 cloudy days in July. The rains are usually moderate. July as well as August is considered the most comfortable time to visit Ft McMurray.