September weather forecast
Postoak, TN

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Weather in September

September, the first month of the autumn in Postoak, is still a warm month, with an average temperature ranging between min 59.2°F (15.1°C) and max 79.7°F (26.5°C).

Temperature

As September arrives, Postoak's weather displays a minor decrease in high-temperatures, transitioning from August's warm 85.5°F (29.7°C) to a still moderately hot 79.7°F (26.5°C). Throughout September, an average low-temperature of 59.2°F (15.1°C) is experienced in Postoak.

Humidity

In September, the average relative humidity is 77%.

Rainfall

The month with the least rainfall in Postoak is September, when the rain falls for 13.2 days and typically collects 2.32" (59mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Postoak, the average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 7:11 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:23 pm EDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

In Postoak, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

What are September temperatures?

The average high-temperature and low-temperature during September are 79.7°F (26.5°C) and 59.2°F (15.1°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 96.8°F (36°C).

What is the average humidity in September in Postoak?

In September, the average relative humidity is 77%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 2.32" (59mm) of precipitation.

How much does it rain in September?

In September, the rain falls for 13.2 days. Throughout September, 2.32" (59mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Postoak have in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 7:11 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:23 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.5h.

What is the UV index intensity in September in Postoak?

In Postoak, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
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
Postoak, TN

Average temperature in September - Postoak, TN
  • Average high temperature in September: 79.7°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (43.7°F).

  • Average low temperature in September: 59.2°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).

Average pressure in September
Postoak, TN

Average pressure in September - Postoak, TN
  • Average pressure in September: 30.03"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).

Average wind speed in September
Postoak, TN

Average wind speed in September - Postoak, TN
  • Average wind speed in September: 4mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average humidity in September
Postoak, TN

Average humidity in September - Postoak, TN
  • Average humidity in September: 77%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is November (76%).

Average rainfall in September
Postoak, TN

Average rainfall in September - Postoak, TN
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is July (4.29").
The driest month (with the least rainfall) is September (2.32").

Average rainfall days in September
Postoak, TN

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

The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (10.7 days).

Average snowfall in September
Postoak, TN

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

The month with the highest snowfall is February (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Postoak, TN

Average snowfall days in September - Postoak, 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, September and October (0 days).

Average daylight in September /
Average sunshine in September
Postoak, TN

Average daylight in September / Average sunshine in September - Postoak, 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 3min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 54min).

Average sunshine days in September
Postoak, TN

Average sunshine days in September - Postoak, TN
  • Average sunshine days in September: 14.3 days

The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (9.4 days).

Average UV index in September
Postoak, TN

Average UV index in September - Postoak, 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).

Average cloud cover in September
Postoak, TN

Average cloud cover in September - Postoak, 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 31).

Average visibility in September
Postoak, TN

Average visibility in September - Postoak, TN
  • Average visibility in September: 5mi

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

Postoak, Tennessee, USA

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