September weather forecast
Clinton, TN

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Weather in September

September marks the arrival of autumn in Clinton, Tennessee, with lowering temperatures. The maximum temperature can be as high as 81°F. As the leaves begin changing color, the area becomes a beautiful spectacle of fall colors. The autumnal weather is characterized by mild and fair conditions, great for walks and hikes in the outdoors. With the departure of the summer heat, the climate is most comfortable for all sorts of outdoor activities.

Temperature

September ushers in a minute temperature change in Clinton, with average high-temperatures reducing from August's tropical 87.3°F to a warm 81°F. Clinton experiences an average nighttime temperature of 59.5°F in the month of September.

Heat index

In September, the average heat index is appraised at a hot 86°F. With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

The average relative humidity in September in Clinton is 74%.

Rainfall

The month with the least rainfall in Clinton is September, when the rain falls for 12.7 days and typically collects 1.97" of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 24min.
On the first day of the month, sunrise is at 7:08 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:30 am and sunset at 7:22 pm EDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In Clinton, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 5 during September leads to these instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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FAQ

What is the temperature in September in Clinton?

In September, the average high-temperature and low-temperature in Clinton, Tennessee, are 81°F and 59.5°F respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 86°F.

What is the average humidity in September in Clinton?

The average relative humidity in September in Clinton is 74%.

What is the driest month in Clinton?

September is the month with the least rainfall. Rain falls for 12.7 days and accumulates 1.97" of precipitation.

How many days does it rain in September in Clinton?

In September, in Clinton, the rain falls for 12.7 days. Throughout September, 1.97" of precipitation is accumulated.

When it does not snow in Clinton?

In Clinton, Tennessee, snow does not fall in May through September.

Does it snow in Clinton in September?

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

How many hours of daylight does Clinton have in September?

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

When is the sunrise / sunset in September in Clinton?

On the first day of September in Clinton, Tennessee, sunrise is at 7:08 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:22 pm EDT.

How many hours of sunshine does Clinton have in September?

The average sunshine duration in September in Clinton, Tennessee, is 8.6h.

How high is the UV index in September in Clinton?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Clinton, TN

Average temperature in September - Clinton, TN
  • Average high temperature in September: 81°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (43.9°F).

  • Average low temperature in September: 59.5°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).

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Average pressure in September
Clinton, TN

Average pressure in September - Clinton, 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 (29.98"Hg).

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Average wind speed in September
Clinton, TN

Average wind speed in September - Clinton, TN
  • Average wind speed in September: 3.8mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

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Average humidity in September
Clinton, TN

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

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

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Average rainfall in September
Clinton, TN

Average rainfall in September - Clinton, TN
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is February (4.53").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in September
Clinton, TN

Average rainfall days in September - Clinton, TN
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (10.3 days).

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Average snowfall in September
Clinton, TN

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

The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Clinton, TN

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

The month with the highest number of snowfall days is January (6.4 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
Clinton, TN

Average daylight in September / Average sunshine in September - Clinton, 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 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

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Average sunshine days in September
Clinton, TN

Average sunshine days in September - Clinton, TN
  • Average sunshine days in September: 16 days

The month with the most sunshine days is November (17.7 days).
The months with the least sunshine days are February and July (10.2 days).

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Average UV index in September
Clinton, TN

Average UV index in September - Clinton, 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
Clinton, TN

Average cloud cover in September - Clinton, 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
Clinton, TN

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

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

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Clinton, Tennessee, USA

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