Washington DC in July

Cherry blossom season from late March to early April draws massive crowds but delivers Instagram gold around the Tidal Basin. Peak bloom lasts just 4-7 days and depends on winter temperatures. Hotel prices double and Metro trains pack like sardine cans. Fall offers the sweet spot from September through November. Temperatures hover in the 60s and 70s, perfect for walking the National Mall. The Kennedy Center's fall season brings world-class performances, and you can actually get dinner reservations. Winter keeps crowds thin at museums, but outdoor monument viewing becomes miserable. The National Christmas Tree ceremony in December draws visitors, while January and February offer the lowest hotel rates of the year. Summer means free outdoor concerts and extended museum hours, but also swamp-like humidity. The Smithsonian Folklife Festival in late June celebrates different cultures with food, music, and crafts on the National Mall. Just prepare to sweat through your shirt by noon.