Sterling, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Sterling, Colorado, United States, is known for the Overland Trail Museum and the annual Sugar Beet Days festival. The best time to travel to Sterling, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and water temperature in nearby lakes 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!