Gregory, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Gregory, Michigan, United States, is known for its proximity to the Pinckney Recreation Area and the Potawatomi Trail, popular destinations for outdoor enthusiasts. The best time to travel to Gregory, United States, is during late spring (May to June) when the average air temperature is around 70°F (21°C) and the water temperature is approximately 65°F (18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!