September weather forecast and climate
Brantley, AL

Weather in September

The first month of the autumn, September, is also a hot month in Brantley, Alabama, with average temperature ranging between min 68°F (20°C) and max 87.1°F (30.6°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still hot 87.1°F (30.6°C). The average low-temperature, in Brantley, is 68°F (20°C).

Heat index

In September, the average heat index is estimated at a very hot 99.9°F (37.7°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like clothing, wind, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Brantley, 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

March through November are months without snowfall.

Daylight

The average length of the day in September is 12.3h.

Sunshine

In Brantley, the average sunshine is 8.9h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Brantley?

In Brantley, in September, the average high-temperature is 87.1°F (30.6°C), and the average low-temperature is 68°F (20°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is estimated at 99.9°F (37.7°C).

What is the average humidity in September in Brantley?

The average relative humidity in September is 74%.

How much does it rain in Brantley in September?

In September, in Brantley, the rain falls for 16.5 days. Throughout September, 2.48" (63mm) of precipitation is accumulated.

When it does not snow in Brantley?

March through November are months without snowfall.

How many hours of daylight does Brantley have in September?

In September, the average length of the day in Brantley is 12.3h.

How many hours of sunshine does Brantley have in September?

In September, the average sunshine is 8.9h.

How high is the UV index in September in Brantley?

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the Sun's UV rays.

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"

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

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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").
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).
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: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.9h

The month with the most sunshine is June (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.2h).

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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

Months with the highest UV index are June, July and August (UV index 7).
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

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

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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