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September Weather in Aurora, United States

Last updated: June 24, 2025

In September, the average temperature in Aurora, United States hovers around 21°C (70°F). Expect a range that can dip as low as 7°C (44°F) and soar up to 35°C (95°F). During this month, you might encounter approximately 88 mm (3.5 in) of precipitation spread over 8 days, contributing to an average humidity level of 69%. Stay prepared for a mix of warm days and refreshing showers!

September Temperature in Aurora

In September, in Aurora, the average temperature is 21°C (70°F). Maximums can reach 35°C (95°F) and minimums can be as low as 7°C (44°F). It's an ideal time to visit for those who enjoy mild weather but be prepared for both warm and cool conditions.

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 21°C (70°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec333745546673777570594339
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 precipitation amount is 88 mm (3.5 in) over the course of 8 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 88 mm (3.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec83112139125126152114107889998107
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 69%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but requiring occasional breaks for hydration and shade during your travels.

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 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 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.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
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 Weather1°C (33°F)83 mm (3.3 inches)87%moderate
February Weather3°C (37°F)112 mm (4.4 inches)85%moderate
March Weather7°C (46°F)138 mm (5.5 inches)86%high
April Weather12°C (54°F)125 mm (4.9 inches)84%very high
May Weather19°C (66°F)126 mm (5.0 inches)79%very high
June Weather23°C (73°F)152 mm (6.0 inches)82%very high
July Weather25°C (77°F)114 mm (4.5 inches)79%very high
August Weather24°C (75°F)107 mm (4.2 inches)70%very high
September Weather21°C (70°F)88 mm (3.5 inches)69%very high
October Weather15°C (59°F)99 mm (3.9 inches)76%high
November Weather6°C (44°F)98 mm (3.9 inches)88%moderate
December Weather4°C (39°F)107 mm (4.2 inches)87%moderate

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