September Weather in Nashville, United States

Last updated: June 24, 2025

In September, the average temperature in Nashville, United States hovers around 23°C (74°F), offering a pleasant climate for outdoor activities. Be prepared for temperatures that can dip as low as 9°C (49°F) or soar to a sizzling 35°C (96°F). You might encounter some rain, with an average precipitation of 123 mm (4.8 in) spread over 10 days, contributing to a relatively high average humidity of 79%.

September Temperature in Nashville

In September in Nashville, the average temperature is 23°C (74°F). Maximums can reach 35°C (96°F) and minimums can be as low as 9°C (49°F). It’s a great time to explore Nashville, so pack accordingly to enjoy a range of outdoor activities!

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 23°C (74°F), with highs reaching up to 35°C (96°F) and lows dropping to around 9°C (49°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 total precipitation amount is 123 mm (4.8 in) over the course of 10 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 123 mm (4.8 inches) of precipitation spread over approximately 10 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 79%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities a bit less comfortable, urging travelers to seek shade and hydration throughout the day.

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.

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.

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	6°C (43°F)	90 mm (3.5 inches)	85%	moderate
February Weather	9°C (49°F)	104 mm (4.1 inches)	82%	high
March Weather	11°C (53°F)	79 mm (3.1 inches)	81%	very high
April Weather	17°C (62°F)	110 mm (4.3 inches)	80%	very high
May Weather	21°C (71°F)	114 mm (4.5 inches)	81%	very high
June Weather	25°C (76°F)	134 mm (5.3 inches)	81%	extreme
July Weather	27°C (80°F)	134 mm (5.3 inches)	81%	extreme
August Weather	26°C (79°F)	153 mm (6.0 inches)	80%	very high
September Weather	23°C (74°F)	123 mm (4.8 inches)	79%	very high
October Weather	19°C (66°F)	83 mm (3.3 inches)	80%	very high
November Weather	11°C (52°F)	85 mm (3.3 inches)	85%	moderate
December Weather	8°C (47°F)	102 mm (4.0 inches)	86%	moderate