July is a great time to explore the USA, especially for outdoor adventures and festive summer vibes. Yellowstone National Park shines with wildlife and geothermal wonders, while Glacier National Park offers stunning alpine scenery and cool weather. San Diego, California boasts perfect beach weather and family-friendly attractions like the zoo. Bar Harbor, Maine is ideal for coastal charm and access to Acadia National Park. For city lovers, Chicago buzzes with festivals, lakefront activities, and fireworks. Alaska is also prime in July, with long daylight hours and spectacular landscapes.