New York County (Manhattan)
September
Weather in New York County, New York for September 2026
Your guide to New York County weather in September - trends and predictions
So far, September 2026 in New York County is slightly warmer than the historical average by 0.8 °F.
Expect cooler weather in the next days in New York County with the forecast suggesting a temperature of 23.4 °F, lower than the historical average.
In general, the average temperature in New York County at the beginning of September is 28.3 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24 °F by the end of September.
New York County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 223.4 mm.
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Temperatures
Rain 🌧️
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21
Dry days
9
Rainy days
0
Snow days
24°/17°
Temperatures
17 km/h
Avg max wind
68 %
Avg humidity
New York County Weather September
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Temperatures trend during September in New York County
See the weather trend as well as the moving average line
September weather in New York County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 28° /18° | 20.5 mm | 5 | |
| Sept. 2 |  Overcast | 27° /18° | 0.1 mm | 5 | |
| Sept. 3 |  Partly cloudy | 28° /17° | 0.9 mm | 5 | |
| Sept. 4 | Sunny | 29° /19° | 0 mm | 7 | |
| Sept. 5 | Sunny | 30° /20° | 10.9 mm | 8 | |
| Sept. 6 | Partly cloudy | 30° /20° | 18.3 mm | 7 | |
| Sept. 7 |  Thundery outbreaks possible | 26° /16° | 24.5 mm | 6 | |
| Sept. 8 | Sunny | 27° /15° | 0.8 mm | 6 | |
| Sept. 9 |  Light rain shower | 27° /17° | 1.9 mm | 5 | |
| Sept. 10 | Light rain shower | 26° /18° | 1.4 mm | 5 | |
| Sept. 11 | Light rain shower | 28° /18° | 0.6 mm | 7 | |
| Sept. 12 |  Cloudy | 26° /17° | 0 mm | 6 | |
| Sept. 13 |  Moderate or heavy rain shower | 26° /18° | 24.9 mm | 5 | |
| Sept. 14 | Cloudy | 26° /18° | 0 mm | 6 | |
| Sept. 15 | Overcast | 24° /16° | 1.5 mm | 6 | |
| Sept. 16 | Overcast | 25° /16° | 0 mm | 6 | |
| Sept. 17 | Sunny | 29° /22° | 0 mm | 6.7 | |
| Sept. 18 | Sunny | 29° /21° | 0 mm | 5.9 | |
| Sept. 19 | Overcast | 20° /15° | 0 mm | 6.6 | |
| Sept. 20 | Patchy rain possible | 26° /18° | 3.2 mm | 0.5 | |
| Sept. 21 | Overcast | 20° /13° | 1.8 mm | 5 | |
| Sept. 22 | Patchy rain possible | 18° /15° | 5.9 mm | 4 | |
| Sept. 23 | Patchy rain possible | 17° /15° | 5 mm | 4 | |
| Sept. 24 | Overcast | 24° /15° | 0.9 mm | 5 | |
| Sept. 25 | Sunny | 21° /14° | 4.2 mm | 6 | |
| Sept. 26 | Sunny | 19° /12° | 0 mm | 5 | |
| Sept. 27 | Sunny | 24° /13° | 0 mm | 6 | |
| Sept. 28 | Sunny | 26° /17° | 0 mm | 7 | |
| Sept. 29 | Sunny | 27° /17° | 0 mm | 7 | |
| Sept. 30 | Sunny | 27° /18° | 0 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for New York County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the New York County forecast closer to your planned date for the most up-to-date weather information.
Change Month
New York County in September - FAQ
What are the expected maximum and minimum temperatures in New York County during September?
During September, expect a variety of temperatures with highs around 24° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in New York County during September?
Significant rainfall exceeding 223.4 mm is expected in New York County during September, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in New York County during September?
The average wind speed in New York County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in New York County
Explore the daily rainfall trends and prepare for New York Countys September weather 💧
Typically, New York County has 9 rainy days in September with a total of 223.4 mm of rainfall.
UV exposure in New York County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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