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September Weather in Aurora, United States

Last updated: June 24, 2025

In Aurora, United States, the average temperature in September hovers around 19°C (67°F), with a minimum dipping to 3°C (38°F) and soaring to a maximum of 33°C (92°F). Expect about 102 mm (4.0 in) of precipitation spread over 10 days, creating a humid atmosphere with an average humidity of 77%. Enjoy the mild climate, but don't forget your umbrella!

September Temperature in Aurora

In September in Aurora, the average temperature is 19°C (67°F). Maximum temperatures can reach 33°C (92°F), while minimums can dip as low as 3°C (38°F). It's a good idea to pack layers and be prepared for both warm days and chilly nights while traveling.

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

The chart illustrates September temperature patterns in Aurora, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aurora, September typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec283239496169747166564134
Data source: Temperature data for Aurora 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 Aurora

In Aurora in September, the total precipitation amount is 102 mm (4.0 in) falling over the course of 10 days.

September Precipitation Trends in Aurora

The chart displays monthly precipitation patterns in Aurora, 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 Aurora, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec86981071351301431311051021129695
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Aurora

In Aurora in September, humidity is 77%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel slightly more challenging as the air clings to your skin, turning every step into a leisurely stroll through a sauna.

September Average Humidity in Aurora

This chart illustrates the average monthly humidity levels in Aurora, 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 Aurora is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Aurora

In Aurora 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 Aurora.

Maximum UV Index Levels in Aurora for September

The chart shows the monthly maximum UV Index (UVI) for Aurora 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 Aurora typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Aurora 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 Aurora Compares to Other Months

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

This table compares monthly weather conditions in Aurora, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)86 mm (3.4 inches)88%moderate
February Weather0°C (32°F)98 mm (3.8 inches)88%moderate
March Weather4°C (39°F)107 mm (4.2 inches)87%high
April Weather9°C (49°F)135 mm (5.3 inches)87%very high
May Weather16°C (61°F)129 mm (5.1 inches)81%very high
June Weather21°C (70°F)143 mm (5.6 inches)83%very high
July Weather23°C (74°F)131 mm (5.1 inches)82%very high
August Weather22°C (72°F)105 mm (4.1 inches)76%very high
September Weather19°C (67°F)102 mm (4.0 inches)77%very high
October Weather13°C (56°F)112 mm (4.4 inches)82%high
November Weather5°C (41°F)96 mm (3.8 inches)89%moderate
December Weather1°C (35°F)95 mm (3.7 inches)86%low

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