September Weather in Nashville, United States

Last updated: June 24, 2025

The average temperature in Nashville, United States during September is a comfortable 26°C (80°F). However, expect variations, with minimums dipping to 13°C (56°F) and maximums soaring to 38°C (101°F). This month typically brings about 120 mm (4.7 in) of precipitation, spread over 12 days. With an average humidity of 83%, it's advisable to stay hydrated and enjoy the lush surroundings!

September Temperature in Nashville

In September in Nashville, the average temperature is 26°C (80°F). Maximums can reach 38°C (101°F), and minimums can be as low as 13°C (56°F). Visitors should be prepared for warm weather, with the possibility of cooler evenings, making it an ideal time for both outdoor adventures and leisurely explorations.

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 26°C (80°F), with highs reaching up to 38°C (101°F) and lows dropping to around 13°C (56°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 120 mm (4.7 in) over a period of 12 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 120 mm (4.7 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 83%. With an average temperature of 26°C (80°F), this humidity feels like a warm, enveloping blanket that can make traveling quite uncomfortable; you may find yourself needing frequent breaks for hydration and cool shade as the thick air clings to your skin.

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 83%, 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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. 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 10, 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	11°C (53°F)	71 mm (2.8 inches)	85%	moderate
February Weather	15°C (59°F)	93 mm (3.6 inches)	82%	very high
March Weather	17°C (63°F)	66 mm (2.6 inches)	80%	very high
April Weather	20°C (68°F)	84 mm (3.3 inches)	76%	very high
May Weather	24°C (76°F)	63 mm (2.5 inches)	73%	extreme
June Weather	27°C (80°F)	122 mm (4.8 inches)	74%	extreme
July Weather	28°C (82°F)	138 mm (5.4 inches)	80%	extreme
August Weather	28°C (82°F)	118 mm (4.6 inches)	79%	extreme
September Weather	26°C (80°F)	120 mm (4.7 inches)	83%	very high
October Weather	22°C (73°F)	68 mm (2.7 inches)	77%	very high
November Weather	15°C (59°F)	44 mm (1.7 inches)	84%	high
December Weather	13°C (55°F)	126 mm (5.0 inches)	88%	moderate