September weather forecast
Glencliff, TN

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Weather in September

September, the first month of the autumn in Glencliff, is still a warm month, with an average temperature fluctuating between 62.8°F (17.1°C) and 81.5°F (27.5°C).

Temperature

September ushers in a minute temperature change, with average high-temperatures reducing from August's tropical 87.4°F (30.8°C) to a warm 81.5°F (27.5°C). In the month of September, Glencliff experiences an average low-temperature of 62.8°F (17.1°C).

Heat index

In September, the heat index is evaluated at a tropical 86°F (30°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

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

Rainfall

In Glencliff, in September, it is raining for 13.4 days, with typically 2.01" (51mm) of accumulated precipitation. In Glencliff, during the entire year, the rain falls for 169.9 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

In Glencliff, Tennessee, snow does not fall in May through October.

Daylight

In September, the average length of the day in Glencliff is 12h and 24min.
On the first day of the month, sunrise is at 6:19 am and sunset at 7:14 pm. On the last day of September, in Glencliff, sunrise is at 6:41 am and sunset at 6:31 pm CDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In Glencliff, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high daily UV index of 5 during September translates into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What are the temperatures in Glencliff in September?

In September, in Glencliff, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 62.8°F (17.1°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 86°F (30°C).

What is the average humidity in September in Glencliff?

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

How many days does it rain in September in Glencliff?

In Glencliff, in September, during 13.4 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

When it does not snow in Glencliff?

In Glencliff, Tennessee, snow does not fall in May through October.

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

The average day length in September in Glencliff is 12h and 24min.

When are sunrise and sunset in September in Glencliff?

In September, on the first day of the month, sunrise is at 6:19 am and sunset at 7:14 pm. On the last day of the month, in Glencliff, Tennessee, sunrise is at 6:41 am and sunset at 6:31 pm CDT.

How many hours of sunshine does Glencliff have in September?

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

How high is the UV index in September in Glencliff?

The average daily maximum UV index in September in Glencliff is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe 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
Glencliff, TN

Average temperature in September - Glencliff, 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
Glencliff, TN

Average pressure in September - Glencliff, 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
Glencliff, TN

Average wind speed in September - Glencliff, 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
Glencliff, TN

Average humidity in September - Glencliff, 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
Glencliff, TN

Average rainfall in September - Glencliff, 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
Glencliff, TN

Average rainfall days in September - Glencliff, 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
Glencliff, TN

Average snowfall in September - Glencliff, 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
Glencliff, TN

Average snowfall days in September - Glencliff, 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
Glencliff, TN

Average daylight in September / Average sunshine in September - Glencliff, 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 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
Glencliff, TN

Average sunshine days in September - Glencliff, 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
Glencliff, TN

Average UV index in September - Glencliff, 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
Glencliff, TN

Average cloud cover in September - Glencliff, 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
Glencliff, TN

Average visibility in September - Glencliff, 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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Glencliff, Tennessee, USA

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