July in Kelowna is the sunniest and the warmest month of the year. In July, the weather in Kelowna is typically warm. Average daily high temperature in July is about 22 degrees above zero. On average, Kelowna has 20 sunny, 10 partly cloudy, and 1 rainy day in July. The rains are usually light. July as well as August is considered the most comfortable time to visit Kelowna.