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September Weather in Auburn, United States

Last updated: June 24, 2025

In September, the average temperature in Auburn, United States hovers around 18°C (64°F). Expect temperatures to fluctuate from a chilly 3°C (37°F) to a warm 34°C (93°F). During this time, the area receives about 90 mm (3.5 in) of precipitation over 10 days, with an average humidity level of 78%.

September Temperature in Auburn

In September in Auburn, the average temperature is a comfortable 18°C (64°F). Maximum temperatures can reach as high as 34°C (93°F), while the minimum can drop to 3°C (37°F). Be prepared for a range of temperatures while enjoying your travel experience!

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

The chart illustrates September temperature patterns in Auburn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Auburn, September typically has an average temperature of 18°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec262835465867737164543932
Data source: Temperature data for Auburn 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 Auburn

In Auburn in September, the precipitation amount is 90 mm (3.5 in) over the course of 10 days.

September Precipitation Trends in Auburn

The chart displays monthly precipitation patterns in Auburn, 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 Auburn, September typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9494871221249417311790162103106
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Auburn

In Auburn in September, humidity is 78%. With an average temperature of 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.

September Average Humidity in Auburn

This chart illustrates the average monthly humidity levels in Auburn, 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 Auburn 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 Auburn

In Auburn in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Auburn.

Maximum UV Index Levels in Auburn for September

The chart shows the monthly maximum UV Index (UVI) for Auburn 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 Auburn typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Auburn 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 Auburn Compares to Other Months

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

This table compares monthly weather conditions in Auburn, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)94 mm (3.7 inches)90%moderate
February Weather-2°C (28°F)94 mm (3.7 inches)90%moderate
March Weather1°C (35°F)86 mm (3.4 inches)87%high
April Weather8°C (46°F)122 mm (4.8 inches)88%very high
May Weather15°C (59°F)124 mm (4.9 inches)82%very high
June Weather20°C (68°F)93 mm (3.7 inches)79%very high
July Weather23°C (73°F)173 mm (6.8 inches)78%very high
August Weather22°C (71°F)117 mm (4.6 inches)76%very high
September Weather18°C (64°F)90 mm (3.5 inches)78%high
October Weather12°C (54°F)162 mm (6.4 inches)84%high
November Weather4°C (40°F)103 mm (4.1 inches)89%moderate
December Weather0°C (32°F)106 mm (4.2 inches)86%low

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