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September Weather in Port Ewen, United States

Last updated: June 24, 2025

In September, the average temperature in Port Ewen, United States hovers around 18°C (65°F). However, be prepared for temperature swings: it can drop as low as 3°C (37°F) or rise to a scorching 32°C (90°F). Expect about 98 mm (3.8 in) of precipitation over 9 days, contributing to an average humidity of 68%.

September Temperature in Port Ewen

In September in Port Ewen, the average temperature is 18°C (65°F). Maximum temperatures can reach up to 32°C (90°F), while the minimum can drop as low as 3°C (37°F). This varying climate makes it essential for travelers to pack for both warm and cool conditions.

September Weather in Port Ewen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Ewen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Ewen, September typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (90°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec283137485968737265554033
Data source: Temperature data for Port Ewen 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 Port Ewen

In Port Ewen in September, the precipitation amount is 98 mm (3.8 in) occurring over the course of 9 days.

September Precipitation Trends in Port Ewen

The chart displays monthly precipitation patterns in Port Ewen, 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 Port Ewen, September typically receives around 98 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7492851411261001491269815397108
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Port Ewen

In Port Ewen in September, humidity is 68%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel somewhat sticky and requiring occasional breaks for refreshing hydration.

September Average Humidity in Port Ewen

This chart illustrates the average monthly humidity levels in Port Ewen, 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 Port Ewen is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Port Ewen

In Port Ewen in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Port Ewen.

Maximum UV Index Levels in Port Ewen for September

The chart shows the monthly maximum UV Index (UVI) for Port Ewen 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 Port Ewen typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35681010998642
Data source: Port Ewen 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 Port Ewen Compares to Other Months

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

This table compares monthly weather conditions in Port Ewen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)74 mm (2.9 inches)84%moderate
February Weather-1°C (31°F)92 mm (3.6 inches)82%moderate
March Weather3°C (37°F)85 mm (3.3 inches)81%high
April Weather9°C (48°F)141 mm (5.6 inches)78%very high
May Weather15°C (59°F)126 mm (5.0 inches)69%very high
June Weather20°C (68°F)100 mm (3.9 inches)69%very high
July Weather23°C (74°F)149 mm (5.9 inches)62%very high
August Weather22°C (72°F)126 mm (4.9 inches)65%very high
September Weather18°C (65°F)98 mm (3.8 inches)68%very high
October Weather13°C (55°F)153 mm (6.0 inches)74%high
November Weather5°C (41°F)97 mm (3.8 inches)82%moderate
December Weather0°C (33°F)108 mm (4.2 inches)80%low

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