Arbon Valley, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Arbon Valley, Idaho, United States, is known for its proximity to the scenic beauty of the Caribou-Targhee National Forest. The best time to travel to Arbon Valley, United States, is in late spring or early fall when the average air temperature is around 60-70°F, and water temperatures in nearby lakes are typically 50-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!