September weather forecast
Cahaba Heights, AL

Weather in September

The first month of the autumn, September, is also a moderately hot month in Cahaba Heights, Alabama, with an average temperature fluctuating between 85.1°F (29.5°C) and 66.2°F (19°C).

Temperature

In September, the average high-temperature is practically the same as in August - a moderately hot 85.1°F (29.5°C). In Cahaba Heights, in September, the average low-temperature is 66.2°F (19°C).

Heat index

In September, the average heat index is calculated to be a tropical 93.7°F (34.3°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 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, metabolic differences, pregnancy). 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity in Cahaba Heights is 72%.

Rainfall

In September, in Cahaba Heights, the rain falls for 12.1 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. In Cahaba Heights, Alabama, during the entire year, the rain falls for 147 days and collects up to 19.06" (484mm) of precipitation.

Snowfall

In Cahaba Heights, snow does not fall in April through November.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:12 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:32 pm CDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September in Cahaba Heights, Alabama, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. 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 Cahaba Heights?

In Cahaba Heights, Alabama, in September, the average high-temperature is 85.1°F (29.5°C), and the average low-temperature is 66.2°F (19°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 93.7°F (34.3°C).

What is the average humidity in September in Cahaba Heights?

In Cahaba Heights, the average relative humidity in September is 72%.

How much does it rain in Cahaba Heights in September?

In Cahaba Heights, Alabama, in September, during 12.1 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When it does not snow in Cahaba Heights?

April through November are months without snowfall in Cahaba Heights, Alabama.

How many hours of daylight does Cahaba Heights have in September?

The average day length in September is 12h and 22min.

When is the sunrise / sunset in September in Cahaba Heights?

On the first day of September in Cahaba Heights, sunrise is at 6:21 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:32 pm CDT.

How long on average sun shines in September in Cahaba Heights?

The average sunshine duration in September in Cahaba Heights, Alabama, is 8.7h.

What is the UV index intensity in September in Cahaba Heights?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Average temperature in September
Cahaba Heights, AL

Average temperature in September - Cahaba Heights, AL
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (51.3°F).

  • Average low temperature in September: 66.2°F

The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (36°F).

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Average pressure in September
Cahaba Heights, AL

Average pressure in September - Cahaba Heights, AL
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

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Average wind speed in September
Cahaba Heights, AL

Average wind speed in September - Cahaba Heights, AL
  • Average wind speed in September: 5mph

The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in September
Cahaba Heights, AL

Average humidity in September - Cahaba Heights, AL
  • Average humidity in September: 72%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Cahaba Heights, AL

Average rainfall in September - Cahaba Heights, AL
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.02").

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Average rainfall days in September
Cahaba Heights, AL

Average rainfall days in September - Cahaba Heights, AL
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (7.3 days).

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Average snowfall in September
Cahaba Heights, AL

Average snowfall in September - Cahaba Heights, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Cahaba Heights, AL

Average snowfall days in September - Cahaba Heights, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Cahaba Heights, AL

Average daylight in September / Average sunshine in September - Cahaba Heights, AL
  • Average daylight in September: 12h and 22min

The month with the longest days is June (Average daylight: 14h and 20min).
The month with the shortest days is December (Average daylight: 9h and 59min).

  • Average sunshine in September: 8.7h

The months with the most sunshine are June and July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in September
Cahaba Heights, AL

Average sunshine days in September - Cahaba Heights, AL
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (9.4 days).

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Average UV index in September
Cahaba Heights, AL

Average UV index in September - Cahaba Heights, AL
  • Average UV index in September: 6

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Cahaba Heights, AL

Average cloud cover in September - Cahaba Heights, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and October (Cloud cover 30).

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Average visibility in September
Cahaba Heights, AL

Average visibility in September - Cahaba Heights, 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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