September weather forecast and climate
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

The first month of the autumn, September, is still a warm month in Nashville, Tennessee, with average temperature varying between 81.5°F (27.5°C) and 62.8°F (17.1°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). The average low-temperature, in Nashville, is 62.8°F (17.1°C).

Heat index

The average heat index in September is appraised at a tropical 86.4°F (30.2°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like differences in body mass, height, and shape, pregnancy, clothing, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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

In Nashville, the average relative humidity is 74%.

Rainfall

In Nashville, during September, the rain falls for 13.4 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Nashville, during the entire year, the rain falls for 169.9 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

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

Sunshine

The average sunshine in September is 8.6h.

UV index

In September, 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 average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
[Resources]

FAQ

What is the temperature in September in Nashville?

The average high-temperature, in September, is 81.5°F (27.5°C), while the average low-temperature is 62.8°F (17.1°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in September is evaluated at 86.4°F (30.2°C).

What is the average humidity in September in Nashville?

The average relative humidity in September in Nashville 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 snow does not fall in May through October.

What is the average length of the day in September in Nashville?

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

How many hours of sunshine does Nashville have in September?

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

What is the UV index reading in September in Nashville?

In Nashville, Tennessee, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

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).

[Resources]

Average pressure in September
Nashville, TN

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

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

[Resources]

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).

[Resources]

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%).

[Resources]

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").

[Resources]

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).

[Resources]

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

[Resources]

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).

[Resources]

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).

[Resources]

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).

[Resources]

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).

[Resources]

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).

[Resources]

Average visibility in September
Nashville, TN

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

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

[Resources]