Westchester County (Yonkers)
September
Weather in Westchester County, New York for September 2027
Your guide to Westchester County weather in September - trends and predictions
In general, the average temperature in Westchester County at the beginning of September is 27.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.5 °C by the end of September.
Westchester County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 239.8 mm.
Is September a good time to visit Westchester County? check out the best time to travel to Westchester County page.
✨ Is September a good time to visit Westchester County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
21
Dry days
9
Rainy days
0
Snow days
24°/16°
Temperatures
16 km/h
Avg max wind
69 %
Avg humidity
Westchester County Weather September
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Temperatures trend during September in Westchester County
See the weather trend as well as the moving average line
September weather in Westchester County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Heavy rain | 27° /18° | 42.4 mm | 5 | |
| Sept. 2 |  Partly cloudy | 26° /18° | 0.1 mm | 5 | |
| Sept. 3 |  Patchy rain possible | 28° /17° | 1.5 mm | 5 | |
| Sept. 4 |  Sunny | 28° /19° | 0 mm | 7 | |
| Sept. 5 |  Moderate rain | 29° /19° | 11.2 mm | 7.8 | |
| Sept. 6 | Moderate rain | 28° /20° | 11.7 mm | 6 | |
| Sept. 7 |  Thundery outbreaks possible | 25° /16° | 25.6 mm | 6 | |
| Sept. 8 | Sunny | 27° /15° | 0.8 mm | 6 | |
| Sept. 9 | Patchy rain possible | 27° /17° | 2.1 mm | 5 | |
| Sept. 10 | Light rain shower | 26° /19° | 1.4 mm | 5 | |
| Sept. 11 | Light rain shower | 27° /17° | 1.2 mm | 7 | |
| Sept. 12 |  Mist | 27° /16° | 0 mm | 6 | |
| Sept. 13 | Moderate rain | 26° /18° | 23.3 mm | 5 | |
| Sept. 14 |  Cloudy | 26° /17° | 0.4 mm | 6 | |
| Sept. 15 | Partly cloudy | 24° /16° | 0 mm | 6 | |
| Sept. 16 |  Overcast | 24° /16° | 0 mm | 5 | |
| Sept. 17 | Overcast | 24° /17° | 0.6 mm | 5 | |
| Sept. 18 |  Light rain | 24° /18° | 7 mm | 6 | |
| Sept. 19 | Overcast | 24° /16° | 0 mm | 5 | |
| Sept. 20 | Light rain | 21° /15° | 3.7 mm | 5 | |
| Sept. 21 | Overcast | 23° /14° | 0.7 mm | 4 | |
| Sept. 22 | Overcast | 21° /14° | 0.6 mm | 4 | |
| Sept. 23 | Moderate rain | 21° /14° | 12.3 mm | 4 | |
| Sept. 24 | Patchy rain possible | 20° /14° | 2.2 mm | 5 | |
| Sept. 25 | Heavy rain | 20° /15° | 26.3 mm | 4 | |
| Sept. 26 | Moderate rain | 22° /16° | 16.1 mm | 4 | |
| Sept. 27 | Moderate rain | 21° /14° | 13 mm | 4 | |
| Sept. 28 | Moderate rain | 20° /15° | 21.6 mm | 4 | |
| Sept. 29 | Moderate rain | 20° /15° | 10.4 mm | 4 | |
| Sept. 30 | Light rain | 22° /15° | 3.4 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Westchester 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 Westchester County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Westchester County in September - FAQ
What are the expected maximum and minimum temperatures in Westchester County during September?
During September, expect a variety of temperatures with highs around 24° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Westchester County during September?
Significant rainfall exceeding 239.8 mm is expected in Westchester 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 Westchester County during September?
The average wind speed in Westchester County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Westchester County
Explore the daily rainfall trends and prepare for Westchester Countys September weather 💧
Typically, Westchester County has 9 rainy days in September with a total of 239.8 mm of rainfall.
UV exposure in Westchester County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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