Penfield, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Penfield, Illinois, United States, is known for the Illinois Railway Museum. The best time to travel to Penfield, United States, is during the summer months of June to August, when the average air temperature is around 70-80°F and the water temperature in nearby Lake Ontario is approximately 60-70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
