July in Kansas City is the hottest month of the year. In July, the weather in Kansas City is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Kansas City has 14 sunny, 9 rainy, 7 partly cloudy, and 1 cloudy day in July. The rains are usually heavy. July as well as January, February, March, and May is considered the most uncomfortable time to visit Kansas City.