The best time to go to Cottonwood, Idaho, is during the summer months, from June to August, for warm, sunny weather great for outdoor activities, or in late autumn, specifically September and October, for pleasant temperatures and beautiful fall colours.Summer in Cottonwood offers long daylight hours and average temperatures ranging from 20°C to 28°C, ideal for exploring the nearby Nez Perce National Historical Park or enjoying the scenic drives. Families will find this time particularly suitable for visits to the area's natural attractions, like the nearby national forests, where hiking and picnicking are popular.Autumn provides a different kind of charm, with cooler temperatures, typically between 10°C and 20°C, and the stunning visual display of changing leaves.