September Weather in Orleans, United States

Last updated: June 24, 2025

In September, the average temperature in Orleans, United States is a pleasant 22°C (71°F). Expect a range where the minimum dips to 7°C (45°F) and the maximum can soar up to 34°C (94°F). Rainfall is moderate, with 80 mm (3.2 in) expected over 8 days, while the humidity sits at a comfortable average of 69%. Enjoy the diverse weather that September brings!

September Temperature in Orleans

In September in Orleans, the average temperature is 22°C (71°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop to as low as 7°C (45°F). This varied climate makes Orleans an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Orleans, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Orleans, September typically has an average temperature of 22°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec333746546674787671594439
Data source: Temperature data for Orleans 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 Orleans

In Orleans in September, the total precipitation amount is 80 mm (3.2 in), occurring over a span of 8 days.

September Precipitation Trends in Orleans

The chart displays monthly precipitation patterns in Orleans, 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 Orleans, September typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec8511514512813812685998010297103
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Orleans

In Orleans in September humidity is 69%. With an average temperature of 22°C (71°F), this humidity feels like walking through a warm embrace, making travel slightly uncomfortable yet refreshing, as the air clings to your skin and adds a layer of warmth to your exploration.

September Average Humidity in Orleans

This chart illustrates the average monthly humidity levels in Orleans, 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 Orleans is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Orleans

In Orleans 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 Orleans.

Maximum UV Index Levels in Orleans for September

The chart shows the monthly maximum UV Index (UVI) for Orleans 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 Orleans typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Orleans 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 Orleans Compares to Other Months

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

This table compares monthly weather conditions in Orleans, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)85 mm (3.4 inches)87%moderate
February Weather3°C (37°F)115 mm (4.5 inches)85%moderate
March Weather8°C (46°F)145 mm (5.7 inches)86%high
April Weather12°C (55°F)128 mm (5.0 inches)84%very high
May Weather19°C (66°F)138 mm (5.4 inches)79%very high
June Weather24°C (75°F)126 mm (4.9 inches)82%extreme
July Weather26°C (78°F)85 mm (3.3 inches)79%very high
August Weather24°C (76°F)99 mm (3.9 inches)70%very high
September Weather22°C (71°F)80 mm (3.2 inches)69%very high
October Weather15°C (60°F)102 mm (4.0 inches)76%high
November Weather6°C (44°F)97 mm (3.8 inches)88%moderate
December Weather4°C (39°F)103 mm (4.1 inches)87%moderate

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