The best time to go to Bonners Ferry is during the summer months, from June to August, or in the early fall, specifically September.Summer offers the warmest weather, with average daily temperatures ranging from the mid-70s to low 80s Fahrenheit (24-28°C), making it ideal for outdoor activities. The Kootenai River is great for boating, fishing, and kayaking, and the surrounding Kootenai National Wildlife Refuge provides excellent opportunities for wildlife viewing, particularly for bird watchers. Families will find this period enjoyable for exploring the natural beauty of the region.September brings cooler, crisp air and fewer crowds, with temperatures typically in the 60s Fahrenheit (15-20°C). This is a beautiful time for hiking and scenic drives as the larch trees begin to change color, offering stunning fall foliage views.