Monthly climate ·New York weather in September
In September, New York averages around 25° by day and 17° at night, with 10 rain days a month — about a 33% chance of rain on any given day.
By day
25°C
At night
17°C
Daily rain chance
33%
Rain days a month
10
Monthly precipitation
122 mm
Sunshine hours a day
9
Average of 2016–2025 (Open-Meteo archive). Typical climate — not a forecast.
Is September a good time to visit New York?
September is warm and pleasant in New York — around 25° by day, but with about 10 rain days a month. Keep some flexibility in your plans.
Every month in New York
Frequently asked questions
- What is the weather in New York in September?
- In September, temperatures in New York average between 17° at night and 25° by day, with 10 rain days a month (average of 2016–2025).
- How much rain falls in New York in September?
- New York gets about 122 mm of rain in September on average, spread over roughly 10 rain days.
- Is September a good time to visit New York?
- September is warm and pleasant in New York — around 25° by day, but with about 10 rain days a month. Keep some flexibility in your plans.