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September Weather in White Plains, United States

Last updated: June 24, 2025

In September, the average temperature in White Plains, United States hovers around 21°C (69°F), providing a pleasant backdrop for your adventures. Expect a minimum of 4°C (40°F) and a maximum reaching up to 33°C (92°F), ensuring a varied climate. With 129 mm (5.1 in) of precipitation spread over 11 days, it's wise to pack an umbrella. On top of that, the average humidity sits at 68%, adding a touch of warmth to your experience.

September Temperature in White Plains

In September in White Plains, the average temperature is 21°C (69°F). Maximum temperatures can reach as high as 33°C (92°F), while minimums can drop to as low as 4°C (40°F). This range makes it essential for travelers to pack both lightweight clothing for warm days and some layers for cooler evenings.

September Weather in White Plains: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in White Plains, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In White Plains, September typically has an average temperature of 21°C (69°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec384348566571767469604642
Data source: Temperature data for White Plains generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in White Plains

In White Plains in September, the precipitation amount is 129 mm (5.1 in) spread over 11 days, indicating a wet period for the area.

September Precipitation Trends in White Plains

The chart displays monthly precipitation patterns in White Plains, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In White Plains, September typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec8411684137129928110912913782110
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in White Plains

In White Plains in September humidity is 68%. With average temperature 21°C (69°F), this humidity feels like a warm embrace, making it essential for travelers to stay hydrated and take breaks in the shade while exploring the local sights.

September Average Humidity in White Plains

This chart illustrates the average monthly humidity levels in White Plains, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in White Plains is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in White Plains

In White Plains in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in White Plains.

Maximum UV Index Levels in White Plains for September

The chart shows the monthly maximum UV Index (UVI) for White Plains in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in White Plains typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111110109853
Data source: White Plains September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in White Plains Compares to Other Months

Weather in White Plains varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in White Plains, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in White Plains, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)84 mm (3.3 inches)87%moderate
February Weather6°C (43°F)115 mm (4.5 inches)87%high
March Weather9°C (48°F)84 mm (3.3 inches)86%very high
April Weather13°C (56°F)137 mm (5.4 inches)84%very high
May Weather18°C (65°F)129 mm (5.1 inches)83%extreme
June Weather22°C (72°F)92 mm (3.6 inches)83%extreme
July Weather24°C (76°F)81 mm (3.2 inches)79%very high
August Weather23°C (74°F)109 mm (4.3 inches)66%very high
September Weather21°C (69°F)129 mm (5.1 inches)68%very high
October Weather15°C (60°F)137 mm (5.4 inches)78%very high
November Weather8°C (46°F)82 mm (3.2 inches)89%moderate
December Weather5°C (42°F)110 mm (4.3 inches)86%moderate

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