July in Bonners Ferry is the windiest, the sunniest, and the warmest month of the year. In July, the weather in Bonners Ferry is typically warm. Average daily high temperature in July is about 23 degrees above zero. On average, Bonners Ferry has 27 sunny, 3 rainy, and 1 partly cloudy day in July. The rains are usually light. July as well as August is considered the most comfortable time to visit Bonners Ferry.