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September Weather in Nashville, United States

Last updated: June 24, 2025

In September, the average temperature in Nashville, United States hovers around 19°C (66°F). Expect a comfortable range, with minimums dipping to 1°C (35°F) and highs reaching 34°C (93°F). Be prepared for some rain as well, with an average precipitation of 101 mm (4.0 in) spread over 11 days. The atmosphere tends to be quite humid, with an average humidity of 79%, making for a warm and tropical experience.

September Temperature in Nashville

In September, in Nashville, the average temperature is 19°C (66°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 1°C (35°F). It's advisable to pack a range of clothing to accommodate both warm and cool weather during your travels.

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

The chart illustrates September temperature patterns in Nashville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nashville, September typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (93°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec262737476070757265533932
Data source: Temperature data for Nashville 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 Nashville

In Nashville in September, the precipitation amount is 101 mm (4.0 in) spread over 11 days.

September Precipitation Trends in Nashville

The chart displays monthly precipitation patterns in Nashville, 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 Nashville, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6874759114010296711011286863
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nashville

In Nashville in September humidity is 79%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making it feel much warmer than the actual temperature and creating a heavy, sticky atmosphere that can be a bit uncomfortable for traveling.

September Average Humidity in Nashville

This chart illustrates the average monthly humidity levels in Nashville, 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 Nashville is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%87%82%81%78%79%80%82%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nashville

In Nashville 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 Nashville.

Maximum UV Index Levels in Nashville for September

The chart shows the monthly maximum UV Index (UVI) for Nashville 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 Nashville typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101097532
Data source: Nashville 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 Nashville Compares to Other Months

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

This table compares monthly weather conditions in Nashville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)68 mm (2.7 inches)87%low
February Weather-3°C (27°F)74 mm (2.9 inches)87%moderate
March Weather3°C (37°F)75 mm (3.0 inches)86%high
April Weather8°C (47°F)91 mm (3.6 inches)87%very high
May Weather16°C (60°F)140 mm (5.5 inches)82%very high
June Weather21°C (70°F)102 mm (4.0 inches)81%very high
July Weather24°C (75°F)96 mm (3.8 inches)78%very high
August Weather22°C (72°F)71 mm (2.8 inches)79%very high
September Weather19°C (66°F)101 mm (4.0 inches)79%high
October Weather12°C (53°F)127 mm (5.0 inches)82%moderate
November Weather4°C (39°F)68 mm (2.7 inches)87%moderate
December Weather0°C (33°F)63 mm (2.5 inches)86%low

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