September Weather in Nashville, United States

Last updated: June 24, 2025

In September, the average temperature in Nashville, United States is a pleasant 15°C (59°F). While temperatures can drop to a chilly -1°C (30°F), they can also soar to a warm 31°C (89°F). Expect an average precipitation of 89 mm (3.5 in) spread over 12 days, with the air holding an average humidity of 78%. How will you enjoy this diverse weather?

September Temperature in Nashville

In September in Nashville, the average temperature is 15°C (59°F), with maximums reaching 31°C (89°F) and minimums dropping as low as -1°C (30°F). This diverse weather makes it crucial for travelers to pack for both warm and chilly conditions.

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 15°C (59°F), with highs reaching up to 31°C (89°F) and lows dropping to around -1°C (30°F).

Data source: Temperature data for Nashville generated using information from the Copernicus Climate Change Service.

September Precipitation in Nashville

In Nashville in September, the precipitation amount is 89 mm (3.5 in) during 12 days of rainfall.

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 89 mm (3.5 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Nashville

In Nashville in September, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

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 78%, offering insight into how humid the weather typically is during this month.

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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	33 mm (1.3 inches)	89%	low
February Weather	-9°C (16°F)	50 mm (2.0 inches)	90%	moderate
March Weather	-2°C (28°F)	49 mm (1.9 inches)	87%	moderate
April Weather	4°C (39°F)	92 mm (3.6 inches)	84%	very high
May Weather	12°C (55°F)	88 mm (3.5 inches)	77%	very high
June Weather	18°C (65°F)	112 mm (4.4 inches)	75%	very high
July Weather	21°C (69°F)	112 mm (4.4 inches)	74%	very high
August Weather	19°C (66°F)	116 mm (4.6 inches)	73%	very high
September Weather	15°C (59°F)	89 mm (3.5 inches)	78%	high
October Weather	7°C (45°F)	111 mm (4.4 inches)	84%	moderate
November Weather	-1°C (30°F)	50 mm (2.0 inches)	89%	moderate
December Weather	-6°C (21°F)	55 mm (2.2 inches)	87%	low