Weather Forecast New York September 2024. P hiladelphia and trenton, new jersey, went 42 days without measurable rain (at least 0.01 inches) from late september into early november, making it the longest such stretch. Get the monthly weather forecast for new york city, ny, including daily high/low, historical averages, to help you plan ahead.

Weather.com brings you the most accurate monthly weather forecast for manhattan, ny with average/record and high/low temperatures, precipitation and more. Detailed graphs of monthly weather forecast, temperatures, and degree days.