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September Weather in Tinicum, United States

Last updated: June 24, 2025

The average temperature in Tinicum, United States during September is a pleasant 20°C (69°F). However, temperatures can range from a cool 5°C (41°F) to a warm 34°C (94°F). Expect a total precipitation of 96 mm (3.8 in) spread over 9 days, contributing to an average humidity of 66%. Perfect for planning your next adventure!

September Temperature in Tinicum

In September in Tinicum, the average temperature is 20°C (69°F). Maximums can reach 34°C (94°F), while minimums can drop as low as 5°C (41°F). This makes Tinicum a suitable destination for travelers looking to experience mild weather with the possibility of warmer days.

September Weather in Tinicum: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Tinicum, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tinicum, September typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (94°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec333642526271777569594437
Data source: Temperature data for Tinicum 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 Tinicum

In Tinicum in September, the total precipitation amount is 96 mm (3.8 in) spread over a period of 9 days.

September Precipitation Trends in Tinicum

The chart displays monthly precipitation patterns in Tinicum, 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 Tinicum, September typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec691051071041351041401499611784105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tinicum

In Tinicum in September humidity is 66%. With an average temperature of 20°C (69°F), this humidity feels like a gentle enveloping warmth, making it comfortable for traveling but with a slight stickiness that may encourage you to seek shade or refreshments frequently.

September Average Humidity in Tinicum

This chart illustrates the average monthly humidity levels in Tinicum, 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 Tinicum is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tinicum

In Tinicum 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 Tinicum.

Maximum UV Index Levels in Tinicum for September

The chart shows the monthly maximum UV Index (UVI) for Tinicum 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 Tinicum typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Tinicum 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 Tinicum Compares to Other Months

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

This table compares monthly weather conditions in Tinicum, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)69 mm (2.7 inches)87%moderate
February Weather2°C (37°F)105 mm (4.1 inches)85%moderate
March Weather5°C (42°F)107 mm (4.2 inches)85%high
April Weather11°C (52°F)104 mm (4.1 inches)83%very high
May Weather17°C (62°F)135 mm (5.3 inches)75%very high
June Weather22°C (71°F)104 mm (4.1 inches)73%very high
July Weather25°C (77°F)140 mm (5.5 inches)65%very high
August Weather24°C (75°F)149 mm (5.9 inches)62%very high
September Weather20°C (69°F)96 mm (3.8 inches)66%very high
October Weather15°C (59°F)117 mm (4.6 inches)79%high
November Weather7°C (45°F)84 mm (3.3 inches)87%moderate
December Weather3°C (38°F)105 mm (4.1 inches)85%low

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