September weather forecast
Nashville, TN

Share
Overlooking the city buildings of Nashville, Tennessee, across the riverfront, with a big cruise ship ashore
Overlooking the city buildings of Nashville, Tennessee, across the riverfront, with a big cruise ship ashore

Weather in September

September invites the onset of autumn to Nashville, Tennessee. The temperature gently begins to decline from the summer peak, indicating a gradual return to cooler climates. The decreased daylight hours and calming wind speeds signify a shift in the weather pattern. As leaves start to fall, the city takes on a warm palette of autumn hues.

Temperature

September's onset brings a negligible change in high-temperatures, falling from a hot 87.4°F (30.8°C) in August to a warm 81.5°F (27.5°C). Nashville experiences an average temperature drop to a comfortable 62.8°F (17.1°C) during September nights.

Heat index

September's heat index is computed to be a tropical 86°F (30°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Nashville, in September, it is raining for 13.4 days, with typically 2.01" (51mm) of accumulated precipitation. In Nashville, during the entire year, the rain falls for 169.9 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

In Nashville, Tennessee, snow does not fall in May through October.

Daylight

In Nashville, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 6:19 am and sunset at 7:14 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:31 pm CDT.

Sunshine

The average sunshine in September in Nashville is 8.6h.

UV index

The average daily maximum UV index in September in Nashville is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 5 in September translates into this advice:
Put precautions into practice - Guidance to elude sunburn is provided. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

Frequently asked questions

What is the usual temperature for Nashville in September?

In September, the average high-temperature and low-temperature are 81.5°F (27.5°C) and 62.8°F (17.1°C) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 74%.

How much does it rain in September?

In September, the rain falls for 13.4 days. Throughout September, 2.01" (51mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in September?

In September, the average day length is 12h and 24min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:19 am and sunset at 7:14 pm. On the last day of the month, in Nashville, sunrise is at 6:42 am and sunset at 6:31 pm CDT.

How long on average sun shines in September?

In Nashville, Tennessee, the average sunshine duration in September is 8.6h.

How high is the UV index in September?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Nashville, TN

Average temperature in September - Nashville, TN
  • Average high temperature in September: 81.5°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (44.1°F).

  • Average low temperature in September: 62.8°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in September
Nashville, TN

Average pressure in September - Nashville, TN
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in September
Nashville, TN

Average wind speed in September - Nashville, TN
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).

Average humidity in September
Nashville, TN

Average humidity in September - Nashville, TN
  • Average humidity in September: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Nashville, TN

Average rainfall in September - Nashville, TN
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days in September
Nashville, TN

Average rainfall days in September - Nashville, TN
  • Average rainfall days in September: 13.4 days

The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is November (9.7 days).

Average snowfall in September
Nashville, TN

Average snowfall in September - Nashville, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Nashville, TN

Average snowfall days in September - Nashville, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Nashville, TN

Average daylight in September / Average sunshine in September - Nashville, TN
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in September
Nashville, TN

Average sunshine days in September - Nashville, TN
  • Average sunshine days in September: 14 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (9.4 days).

Average UV index in September
Nashville, TN

Average UV index in September - Nashville, TN
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September
Nashville, TN

Average cloud cover in September - Nashville, TN
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 29).

Average visibility in September
Nashville, TN

Average visibility in September - Nashville, TN
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Nashville, Tennessee, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location