September weather forecast
Black, AL

Weather in September

September, the first month of the autumn in Black, is still a hot month, with an average temperature varying between 69.6°F (20.9°C) and 86.9°F (30.5°C).

Temperature

In Black, the average high-temperature in September is almost the same as in August - a still tropical 86.9°F (30.5°C). In September, the average low-temperature is 69.6°F (20.9°C).

Heat index

In September, the average heat index is evaluated at a torrid 100.4°F (38°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, wind, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In September, the average relative humidity in Black, Alabama, is 75%.

Rainfall

September is the month with the least rainfall in Black, Alabama. Rain falls for 8.6 days and accumulates 0.28" (7mm) of precipitation.

Daylight

The average length of the day in September in Black is 12h and 20min.
On the first day of the month, sunrise is at 6:19 am and sunset at 7:06 pm. On the last day of September, in Black, Alabama, sunrise is at 6:36 am and sunset at 6:29 pm CDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Black?

The average high-temperature, in September, in Black, Alabama, is 86.9°F (30.5°C), while the average low-temperature is 69.6°F (20.9°C). in September, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 100.4°F (38°C).

What is the average humidity in September in Black?

The average relative humidity in September in Black is 75%.

What is the driest month in Black?

September is the month with the least rainfall. Rain falls for 8.6 days and accumulates 0.28" (7mm) of precipitation.

How many days does it rain in September in Black?

In Black, Alabama, in September, during 8.6 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

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

In September, the average day length in Black is 12h and 20min.

When are sunrise and sunset in September in Black?

In September, on the first day of the month, sunrise is at 6:19 am and sunset at 7:06 pm. On the last day of the month, in Black, sunrise is at 6:36 am and sunset at 6:29 pm CDT.

How many hours of sunshine does Black have in September?

In Black, Alabama, the average sunshine duration in September is 8.9h.

What is the UV index reading in September in Black?

In September, the average daily maximum UV index in Black, Alabama, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Black, AL

Average temperature in September - Black, AL
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (58.8°F).

  • Average low temperature in September: 69.6°F

The month with the highest average low temperature is August (74.1°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in September
Black, AL

Average pressure in September - Black, AL
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed in September
Black, AL

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

The windiest months (with the highest average wind speed) are January, February and March (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in September
Black, AL

Average humidity in September - Black, AL
  • Average humidity in September: 75%

The months with the highest relative humidity are August and December (76%).
The months with the lowest relative humidity are May and October (70%).

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Average rainfall in September
Black, AL

Average rainfall in September - Black, AL
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is August (0.98").
The driest month (with the least rainfall) is September (0.28").

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Average rainfall days in September
Black, AL

Average rainfall days in September - Black, AL
  • Average rainfall days in September: 8.6 days

The months with the highest number of rainy days are July and August (13.3 days).
The month with the least rainy days is November (4.7 days).

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

Average daylight in September / Average sunshine in September - Black, AL
  • Average daylight in September: 12h and 20min

The month with the longest days is June (Average daylight: 14h and 8min).
The month with the shortest days is December (Average daylight: 10h and 11min).

  • Average sunshine in September: 8h and 54min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

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Average sunshine days in September
Black, AL

Average sunshine days in September - Black, AL
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is November (24.4 days).
The month with the least sunshine days is July (13.2 days).

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Average UV index in September
Black, AL

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

The months with the highest UV index are May, 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
Black, AL

Average cloud cover in September - Black, AL
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is October (Cloud cover 26).

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Average visibility in September
Black, AL

Average visibility in September - Black, AL
  • 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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