Glendo, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Glendo, Wyoming, United States, is known for its proximity to Glendo State Park, which offers excellent opportunities for boating, fishing, and camping. The best time to travel to Glendo, United States, is in late spring or early summer when the average air temperature is around 70°F (21°C) and the water temperature is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!