Weather in Manhattan in September
September in Manhattan is mild with average temperatures around 19.8°C (67.6°F). Expect significant rainfall with 105mm across approximately 10 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
25.1°C
77.2°F
Low
14.6°C
58.3°F
Precipitation
105 mm
4.1 inches
~10 rainy days
Conditions
Humidity
74%
Comparison to Adjacent Months
September is 3.7°C cooler than August.
September is 6.7°C warmer than October.