September weather forecast
Nashville, TN

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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

Nashville's weather subtly changes with the onset of September, barely falling from a hot 87.4°F in August to a warm 81.5°F. Throughout September, an average nighttime temperature of 62.8°F is experienced in Nashville.

Heat index

The heat index for September is computed to be a hot 86°F. Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.

Humidity

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

Rainfall

In September, in Nashville, Tennessee, the rain falls for 13.4 days. Throughout September, 2.01" of precipitation is accumulated. Throughout the year, there are 169.9 rainfall days, and 31.3" of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Nashville, Tennessee.

Daylight

In September, the average length of the day in Nashville is 12h and 24min.
On the first day of the month, sunrise is at 6:18 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:32 pm CDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In Nashville, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The UV index of 5 during September translates into the following guidance:
Undertake precautions - Obligation exists to protect against skin and eye damage. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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FAQ

What is the average September temperature in Nashville?

The high-temperature in Nashville, Tennessee, during September is 81.5°F and the low-temperature is 62.8°F. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is computed to be 86°F.

What is the average humidity in September in Nashville?

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

How many days does it rain in September in Nashville?

In Nashville, in September, it is raining for 13.4 days, with typically 2.01" of accumulated precipitation.

When it does not snow in Nashville?

May through October are months without snowfall.

How many hours of daylight does Nashville have in September?

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

When is the sunrise / sunset in September in Nashville?

In September, on the first day of the month, sunrise is at 6:18 am and sunset at 7:15 pm. On the last day of the month, in Nashville, sunrise is at 6:41 am and sunset at 6:32 pm CDT.

How long on average sun shines in September in Nashville?

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

How high is the UV index in September in Nashville?

The average daily maximum UV index in September in Nashville, Tennessee, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
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).

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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).

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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).

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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: 2.01"

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

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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: 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").

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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).
The 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: 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).

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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

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).

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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).
The 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: 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).

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Nashville, Tennessee, USA

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