September weather forecast
Sevierville, TN

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Weather in September

September in Sevierville is a blend of the remaining warmth of Summer and the onset of Autumn. Noteworthy, temperatures see a significant drop from highs of 85.3°F (29.6°C) in August to a more comfortable 79.9°F (26.6°C). Leaves begin to change color, landscape turns spectacular and evening become longer providing a respite from the summer heat. While the days are still warm, nights tend to get a little chillier. October, in contrast to September, brings lower temperatures, increased rainfall and falling leaves.

Temperature

As September arrives, Sevierville's weather displays a minor decrease in high-temperatures, transitioning from August's moderately hot 85.3°F (29.6°C) to a still warm 79.9°F (26.6°C). Sevierville's nighttime temperature in September demonstrates a noticeable plunge to a refreshing 57.9°F (14.4°C).

Humidity

In September, the average relative humidity in Sevierville is 75%.

Rainfall

September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 1.57" (40mm) of precipitation.

Snowfall

In Sevierville, snow does not fall in May through September.

Daylight

In Sevierville, Tennessee, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 7:06 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:18 pm EDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

In Sevierville, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the usual temperature for Sevierville in September?

In Sevierville, 79.9°F (26.6°C) is the average high-temperature and 57.9°F (14.4°C) is the average low-temperature during September. The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in August is computed to be 95°F (35°C).

What is the average humidity in September in Sevierville?

The average relative humidity in September in Sevierville is 75%.

What is the driest month in Sevierville?

The month with the least rainfall is September, when the rain falls for 13.2 days and typically collects 1.57" (40mm) of precipitation.

How many days does it rain in September in Sevierville?

In Sevierville, during September, the rain falls for 13.2 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow in Sevierville?

In Sevierville, snow does not fall in May through September.

Does it snow in Sevierville in September?

In Sevierville, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Sevierville have in September?

The average day length in September in Sevierville is 12h and 23min.

When is the sunrise / sunset in September in Sevierville?

On the first day of September, sunrise is at 7:06 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:18 pm EDT.

How many hours of sunshine does Sevierville have in September?

In September, the average sunshine duration is 8.7h.

What is the UV index reading in September in Sevierville?

In September, the average daily maximum UV index in Sevierville is 5. A UV Index estimate 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
Sevierville, TN

Average temperature in September - Sevierville, TN
  • Average high temperature in September: 79.9°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (44.8°F).

  • Average low temperature in September: 57.9°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

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Average pressure in September
Sevierville, TN

Average pressure in September - Sevierville, TN
  • Average pressure in September: 30.04"Hg

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in September
Sevierville, TN

Average wind speed in September - Sevierville, TN
  • Average wind speed in September: 3.7mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average humidity in September
Sevierville, TN

Average humidity in September - Sevierville, TN
  • Average humidity in September: 75%

The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is August (73%).

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Average rainfall in September
Sevierville, TN

Average rainfall in September - Sevierville, TN
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is February (3.43").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in September
Sevierville, TN

Average rainfall days in September - Sevierville, TN
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (9.7 days).

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Average snowfall in September
Sevierville, TN

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

The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Sevierville, TN

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

The months with the highest number of snowfall days are January and February (4.8 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
Sevierville, TN

Average daylight in September / Average sunshine in September - Sevierville, 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 48min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

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Average sunshine days in September
Sevierville, TN

Average sunshine days in September - Sevierville, TN
  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (9.3 days).

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Average UV index in September
Sevierville, TN

Average UV index in September - Sevierville, 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
Sevierville, TN

Average cloud cover in September - Sevierville, TN
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in September
Sevierville, TN

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

The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).

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Sevierville, Tennessee, USA

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