The best time to visit Lowell is during the summer months, from June to August, when the weather is warm and all the outdoor activities are readily available.During this period, the days are long and sunny, with temperatures typically ranging from 20°C to 30°C. This makes it ideal for exploring the surrounding wilderness, whether you're interested in hiking, fishing, or white-water rafting on the Selway and Lochsa Rivers. The warm weather also means that all the local amenities, such as guided tours and equipment rentals, are fully operational.For those looking for a quieter experience, the shoulder seasons of late spring (May) and early autumn (September) can also be appealing. The weather is still pleasant, though cooler, and the crowds are smaller. You might even catch the vibrant autumn foliage in September.