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 (27.2°C). 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

The beginning of September brings a slight decrease in the average high-temperature, transitioning from a hot 87.3°F (30.7°C) in August to a moderately hot 81°F (27.2°C). During September nights, Clinton witnesses a consistent average temperature of 59.5°F (15.3°C).

Heat index

In September, the heat index is appraised at a tropical 86°F (30°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

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

Rainfall

September is the month with the least rainfall. Rain falls for 12.7 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day in Clinton, Tennessee, is 12h and 24min.
On the first day of the month, sunrise is at 7:08 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:21 pm EDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September in Clinton is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum daily UV index of 5 during September morphs into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What is the average September temperature in Clinton?

The average high-temperature, in September, in Clinton, is 81°F (27.2°C), while the average low-temperature is 59.5°F (15.3°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 86°F (30°C).

What is the average humidity in September in Clinton?

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

What is the driest month in Clinton?

The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 1.97" (50mm) of precipitation.

How many days does it rain in September in Clinton?

In Clinton, in September, it is raining for 12.7 days, with typically 1.97" (50mm) of accumulated precipitation.

When it does not snow in Clinton?

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

Does it snow in Clinton in September?

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

How many hours of daylight does Clinton have in September?

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

When is the sunrise / sunset in September in Clinton?

In September, on the first day of the month, sunrise is at 7:08 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:21 pm EDT.

How long on average sun shines in September in Clinton?

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

What is the UV index reading in September in Clinton?

In Clinton, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average max. wind speed
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
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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