September weather forecast
Brantley, AL

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Weather in September

September heralds the arrival of autumn where temperatures in Brantley, Alabama, reside around 87.1°F (30.6°C) during the day, a noticeable decline from the summer peak. The shift in weather conditions from August to September signifies the onset of the cooler yet comfortable season. September marks the retreating of the summer season, slowly paving the way for the crisp charm of autumn to dominate. Frequent rainfall and relative humidity are characteristic of September, presenting a much-needed relief from the previous hot and dry months. As the month progresses, the temperatures continue to drop, making way for the colder months ahead.

Temperature

The start of September marks an average high-temperature of a still tropical 87.1°F (30.6°C), hardly distinguishable from the conditions in August. During the nights in September, the temperature in Brantley averages to an agreeable 68°F (20°C).

Heat index

September's mean heat index is evaluated at a very hot 100.4°F (38°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Brantley, in September, during 16.5 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. In Brantley, during the entire year, the rain falls for 175.6 days and collects up to 35.87" (911mm) of precipitation.

Snowfall

In Brantley, Alabama, snow does not fall in March through November.

Daylight

In September, the average length of the day is 12h and 21min.
On the first day of September, sunrise is at 6:21 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:30 pm CDT.

Sunshine

In Brantley, the average sunshine in September is 8.9h.

UV index

In September, the average daily maximum UV index in Brantley is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

How hot does it get in Brantley in September?

In Brantley, 87.1°F (30.6°C) is the average high-temperature and 68°F (20°C) is the average low-temperature during September. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 100.4°F (38°C).

What is the average humidity in September in Brantley?

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

How many days does it rain in September in Brantley?

In Brantley, in September, it is raining for 16.5 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow in Brantley?

In Brantley, Alabama, snow does not fall in March through November.

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

The average day length in September in Brantley, Alabama, is 12h and 21min.

When are sunrise and sunset in September in Brantley?

In September, on the first day of the month, sunrise is at 6:21 am and sunset at 7:08 pm. On the last day of the month, in Brantley, Alabama, sunrise is at 6:38 am and sunset at 6:30 pm CDT.

How many hours of sunshine does Brantley have in September?

The average sunshine duration in September in Brantley is 8.9h.

How high is the UV index in September in Brantley?

In Brantley, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Brantley, AL

Average temperature in September - Brantley, AL
  • Average high temperature in September: 87.1°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (56.7°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is August (72.3°F).
The coldest month (with the lowest average low temperature) is January (39.4°F).

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Average pressure in September
Brantley, AL

Average pressure in September - Brantley, AL
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

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Average wind speed in September
Brantley, AL

Average wind speed in September - Brantley, AL
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in September
Brantley, AL

Average humidity in September - Brantley, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Brantley, AL

Average rainfall in September - Brantley, AL
  • Average rainfall in September: 2.48"

The wettest month (with the highest rainfall) is August (4.37").
The driest month (with the least rainfall) is November (2.09").

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Average rainfall days in September
Brantley, AL

Average rainfall days in September - Brantley, AL
  • Average rainfall days in September: 16.5 days

The month with the highest number of rainy days is July (23.4 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall in September
Brantley, AL

Average snowfall in September - Brantley, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Brantley, AL

Average snowfall days in September - Brantley, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Brantley, AL

Average daylight in September / Average sunshine in September - Brantley, AL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

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Average sunshine days in September
Brantley, AL

Average sunshine days in September - Brantley, AL
  • Average sunshine days in September: 12.3 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is July (5.4 days).

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Average UV index in September
Brantley, AL

Average UV index in September - Brantley, AL
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in September
Brantley, AL

Average cloud cover in September - Brantley, AL
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 28).

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Average visibility in September
Brantley, AL

Average visibility in September - Brantley, AL
  • Average visibility in September: 6mi

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

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Brantley, Alabama, USA

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