The best time to go to Columbia Falls is during the summer months, from early July to late August, when the weather is consistently warm and all the attractions are fully accessible.This period offers the most pleasant conditions for exploring the region. Days are typically long and sunny, with temperatures often in the mid-20s Celsius, making it ideal for outdoor activities. All roads within Glacier National Park, including the renowned Going-to-the-Sun Road, are usually open by early July, providing full access to its stunning landscapes and hiking trails.For those planning an active holiday, this is the prime time. You'll find the widest range of guided tours, boat trips on Lake McDonald, and horseback riding excursions readily available. It's also when wildlife spotting is at its peak, with many animals active in the warmer weather.If you prefer to avoid the busiest crowds but still want good weather, visiting in early September is also an excellent option. The temperatures remain agreeable, and the autumn colours begin to emerge, offering a different kind of natural beauty.