September weather forecast
Nashville, TN

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, the first month of the autumn, in Nashville, is still a warm month, with average temperature fluctuating between 62.8°F (17.1°C) and 81.5°F (27.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 87.4°F (30.8°C) in August, to a moderately hot 81.5°F (27.5°C). In Nashville, in September, the average low-temperature is 62.8°F (17.1°C).

Heat index

In September, the average heat index is computed to be a tropical 86.4°F (30.2°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, pregnancy, clothing), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

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. Throughout the year, there are 169.9 rainfall days, and 31.3" (795mm) of precipitation is accumulated.

Snowfall

In Nashville snow does not fall in May through October.

Daylight

In September, the average length of the day in Nashville is 12.4h.

Sunshine

The average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in Nashville is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Nashville?

In September, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 62.8°F (17.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is computed to be 86.4°F (30.2°C).

What is the average humidity in September in Nashville?

In Nashville, the average relative humidity in September is 74%.

How many days does it rain in September in Nashville?

In Nashville, Tennessee, during September, the rain falls for 13.4 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When it does not snow in Nashville?

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

How many hours of daylight does Nashville have in September?

The average length of the day in September in Nashville, Tennessee, is 12.4h.

How many hours of sunshine does Nashville have in September?

The average sunshine in September in Nashville is 8.6h.

What is the UV index reading in September in Nashville?

In Nashville, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in September
Nashville, TN

Average temperature in September - Nashville, TN
  • Average high temperature in September: 27.5°C

The warmest month (with the highest average high temperature) is July (31.3°C).
The month with the lowest average high temperature is January (6.7°C).

  • Average low temperature in September: 17.1°C

The month with the highest average low temperature is July (21°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).

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Average pressure in September
Nashville, TN

Average pressure in September - Nashville, TN
  • Average pressure in September: 1016.9mbar

The month with the highest atmospheric pressure is January (1021.7mbar).
The month with the lowest atmospheric pressure is June (1014.8mbar).

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Average wind speed in September
Nashville, TN

Average wind speed in September - Nashville, TN
  • Average wind speed in September: 8km/h

The windiest month (with the highest average wind speed) is February (13km/h).
The calmest months (with the lowest average wind speed) are July and August (7.4km/h).

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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%).

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Average rainfall in September
Nashville, TN

Average rainfall in September - Nashville, TN
  • Average rainfall in September: 51mm

The wettest month (with the highest rainfall) is July (102mm).
The driest month (with the least rainfall) is November (45mm).

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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).

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Average snowfall in September
Nashville, TN

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

The month with the highest snowfall is January (24mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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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).
Months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Nashville, TN
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 8.6h

The month with the most sunshine is June (Average sunshine: 10.5h).
Months with the least sunshine are January and February (Average sunshine: 4.6).

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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).

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Average UV index in September
Nashville, TN

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

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

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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).
Months with the least cloud cover are June and August (Cloud cover 29).

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Average visibility in September
Nashville, TN

Average visibility in September - Nashville, TN
  • Average visibility in September: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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