Pack business attire appropriate for your line of work. Choose lighter weight materials for the summer months. Women wear hose with suits despite the summer heat and tights for warmth in the winter. Don't forget comfortable dressy casual clothes to blend into the New York scene. Men pair khakis or cords with a nice button-down shirt and leather loafer.
Women pair a knee-length skirt and sweater set with a leather flat.
Take a heavy winter coat, long underwear, sweaters, boots, socks, gloves, a scarf and a hat if you plan to be in New York between November and March. Wear rubber-soled shoes to avoid slipping on ice or snow. Pack lightweight fabrics such as cotton and linen for summer visits, as these natural fibers will breathe in the heat. Pair summer attire with comfortable walking shoes or sandals. Women should pack a nice dress for the same occasion.