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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 18°C (65°F), with a minimum dip to 4°C (39°F) and peaks reaching up to 34°C (93°F). Expect around 80 mm (3.2 in) of precipitation spread over 9 days, paired with an average humidity of 78%. Enjoy the variety that this month brings!

September Temperature in Aurora

In September, in Aurora, the average temperature is 18°C (65°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 4°C (39°F). This makes Aurora a comfortable destination for travelers seeking both warmth and cool respite.

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 18°C (65°F), with highs reaching up to 34°C (93°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec272935465867737265544033
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 80 mm (3.2 in) over the course of 9 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 80 mm (3.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec8384791131158413893801479296
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 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%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.
JanFebMarAprMayJunJulAugSepOctNovDec34681010998642
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-3°C (28°F)83 mm (3.3 inches)90%moderate
February Weather-2°C (29°F)84 mm (3.3 inches)90%moderate
March Weather2°C (35°F)79 mm (3.1 inches)87%high
April Weather8°C (46°F)113 mm (4.4 inches)88%very high
May Weather14°C (58°F)115 mm (4.5 inches)82%very high
June Weather20°C (68°F)84 mm (3.3 inches)79%very high
July Weather23°C (73°F)138 mm (5.4 inches)78%very high
August Weather22°C (72°F)93 mm (3.7 inches)76%very high
September Weather18°C (65°F)80 mm (3.2 inches)78%very high
October Weather12°C (55°F)147 mm (5.8 inches)84%high
November Weather5°C (41°F)92 mm (3.6 inches)89%moderate
December Weather1°C (33°F)96 mm (3.8 inches)86%low

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