New York City weather, like its people, is a study in extremes. Much of winter brings bone-chilling winds and an occasional traffic-snarling snowfall, but you're just as likely to experience mild afternoons sandwiched by cool temperatures.
In late spring and early summer, streets fill with parades and street fairs, and Central Park has free performances. Late-August temperatures sometimes claw skyward, bringing subway station temperatures over 100°F (no wonder the Hamptons are so crowded). This is why September brings palpable excitement, with stunning yellow-and-bronze foliage complementing the dawn of a new cultural season. Between October and May, museums mount major exhibitions, most Broadway shows open, and formal opera, ballet, and concert seasons begin.