The highest day temperature in September 2026 was 110°F. The lowest night temperature was 57°F. The average values for day and night temperatures during September were 86.8°F и 72.2°F respectivly.

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation total in September for Manhattan is 0.6 in.

The average wind speed in September is 10.2 mph. It makes September one of the most windless months of the year for Manhattan.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Manhattan in September is 9.1 hours.