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September Weather in Nashville, United States

Last updated: June 24, 2025

In Nashville, United States, the average temperature in September hovers around 25°C (77°F), creating a pleasant atmosphere for visitors. However, be prepared for fluctuations, as the temperature can drop to a minimum of 10°C (50°F) and soar up to 38°C (100°F). Expect some rain, with an average precipitation of 82 mm (3.2 in) spread over about 8 days. Additionally, the average humidity level rests at a comfortable 63%, ensuring a breezy experience.

September Temperature in Nashville

In September in Nashville, the average temperature is 25°C (77°F), with maximums reaching up to 38°C (100°F) and minimums dropping as low as 10°C (50°F). It’s an ideal time to travel to Nashville if you enjoy warm weather and are prepared for some temperature variations.

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 25°C (77°F), with highs reaching up to 38°C (100°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec444757627279828177655349
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 total precipitation amount reached 82 mm (3.2 in) over the course of 8 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 82 mm (3.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec106167163203182109981188210277138
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 63%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, creating a thick atmosphere that can make outdoor activities a little sluggish, but the warmth invites leisurely strolls and relaxation in shaded spots.

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 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%78%79%81%77%72%65%63%70%82%88%
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 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111119864
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 Weather7°C (44°F)106 mm (4.2 inches)82%moderate
February Weather8°C (47°F)167 mm (6.6 inches)80%high
March Weather14°C (57°F)163 mm (6.4 inches)78%very high
April Weather17°C (62°F)203 mm (8.0 inches)79%very high
May Weather22°C (72°F)182 mm (7.2 inches)81%extreme
June Weather26°C (79°F)109 mm (4.3 inches)77%extreme
July Weather28°C (82°F)98 mm (3.8 inches)72%extreme
August Weather27°C (81°F)118 mm (4.6 inches)65%extreme
September Weather25°C (77°F)82 mm (3.2 inches)63%very high
October Weather18°C (65°F)102 mm (4.0 inches)70%very high
November Weather12°C (53°F)77 mm (3.0 inches)82%high
December Weather9°C (49°F)138 mm (5.4 inches)88%moderate

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