July in Kalispell is the sunniest and the warmest month of the year. In July, the weather in Kalispell is typically warm. Average daily high temperature in July is about 27 degrees above zero. On average, Kalispell has 23 sunny, 6 rainy, and 2 partly cloudy days in July. The rains are usually light. July as well as August is considered the most comfortable time to visit Kalispell.