Click on a day for an hourly weather forecast
The temperatures in New York City in September are comfortable with low of 17°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in New York City during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in New York City in September 2025.
If you’re planning to visit New York City in the near future, we highly recommend that you review the 14 day weather forecast for New York City before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -4° | 6 | 16 | 9 | 119 mm | Awful | New York City in January |
| February | 3° / -3° | 8 | 11 | 10 | 136 mm | Awful | New York City in February |
| March | 7° / 1° | 8 | 17 | 7 | 149 mm | Awful | New York City in March |
| April | 13° / 6° | 8 | 21 | 1 | 141 mm | Bad | New York City in April |
| May | 20° / 12° | 8 | 23 | 0 | 137 mm | Ok | New York City in May |
| June | 25° / 17° | 8 | 22 | 0 | 161 mm | Good | New York City in June |
| July | 28° / 20° | 10 | 21 | 0 | 201 mm | Good | New York City in July |
| August | 28° / 20° | 7 | 24 | 0 | 183 mm | Good | New York City in August |
| September | 24° / 17° | 6 | 24 | 0 | 128 mm | Perfect | New York City in September |
| October | 17° / 11° | 7 | 24 | 0 | 160 mm | Ok | New York City in October |
| November | 10° / 5° | 6 | 23 | 1 | 108 mm | Ok | New York City in November |
| December | 5° / 1° | 7 | 17 | 7 | 166 mm | Awful | New York City in December |