September weather forecast
Westwood, TN

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Weather in September

The first month of the autumn, September, is still a warm month in Westwood, Tennessee, with an average temperature varying between 61.3°F (16.3°C) and 80.8°F (27.1°C).

Temperature

A minimal variation is noted in Westwood's average high-temperature at the onset of September, reaching a still moderately hot 80.8°F (27.1°C) from August's 85.6°F (29.8°C). An average nighttime temperature of 61.3°F (16.3°C) is observed in Westwood during September.

Heat index

For September, the heat index is evaluated at a hot 86°F (30°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
Note that heat index values are valued for light wind and location in the shade. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', comes about by integrating the temperature readings with the humidity levels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are essentially critical for children. 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 Westwood is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 1.85" (47mm) of precipitation.

Snowfall

May through October are months without snowfall in Westwood.

Daylight

The average length of the day in September in Westwood is 12h and 23min.
On the first day of the month, sunrise is at 6:17 am and sunset at 7:11 pm. On the last day of September, in Westwood, sunrise is at 6:39 am and sunset at 6:29 pm CDT.

Sunshine

In Westwood, the average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index in Westwood is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 5 in September translates into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What are September temperatures in Westwood?

In September, the average high-temperature and low-temperature in Westwood are 80.8°F (27.1°C) and 61.3°F (16.3°C) respectively. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is evaluated at 86°F (30°C).

What is the average humidity in September in Westwood?

The average relative humidity in September in Westwood is 76%.

What is the driest month in Westwood?

September is the month with the least rainfall. Rain falls for 12.8 days and accumulates 1.85" (47mm) of precipitation.

How many days does it rain in September in Westwood?

In September, the rain falls for 12.8 days. Throughout September, 1.85" (47mm) of precipitation is accumulated.

When it does not snow in Westwood?

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

How many hours of daylight does Westwood have in September?

In Westwood, the average day length in September is 12h and 23min.

When is the sunrise / sunset in September in Westwood?

In September, on the first day of the month, sunrise is at 6:17 am and sunset at 7:11 pm. On the last day of the month, in Westwood, sunrise is at 6:39 am and sunset at 6:29 pm CDT.

How long on average sun shines in September in Westwood?

The average sunshine duration in September in Westwood, Tennessee, is 8.5h.

What is the UV index intensity in September in Westwood?

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

Average temperature in September - Westwood, TN
  • Average high temperature in September: 80.8°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in September: 61.3°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).

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Average pressure in September
Westwood, TN

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

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Average wind speed in September
Westwood, TN

Average wind speed in September - Westwood, TN
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

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Average humidity in September
Westwood, TN

Average humidity in September - Westwood, TN
  • Average humidity in September: 76%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are October and November (75%).

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Average rainfall in September
Westwood, TN

Average rainfall in September - Westwood, TN
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is February (4.02").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in September
Westwood, TN

Average rainfall days in September - Westwood, TN
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in September
Westwood, TN

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

The month with the highest snowfall is February (0.91").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Westwood, TN

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

The months with the highest number of snowfall days are January and February (3.3 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
Westwood, TN

Average daylight in September / Average sunshine in September - Westwood, TN
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in September
Westwood, TN

Average sunshine days in September - Westwood, TN
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (9.1 days).

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Average UV index in September
Westwood, TN

Average UV index in September - Westwood, 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 and December (UV index 2).

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Average cloud cover in September
Westwood, TN

Average cloud cover in September - Westwood, TN
  • Average cloud cover in September: 32

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in September
Westwood, TN

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

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

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Westwood, Tennessee, USA

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