September weather forecast and climate
Cahaba Crest, AL

The first month of the autumn, September, is also a moderately hot month in Cahaba Crest, Alabama, with average temperature ranging between min 64.6°F (18.1°C) and max 84.7°F (29.3°C).

Temperature

In Cahaba Crest, the average high-temperature in September is essentially the same as in August - a warm 84.7°F (29.3°C). In September, in Cahaba Crest, Alabama, the average low-temperature is 64.6°F (18.1°C).

Heat index

In September, the average heat index is estimated at a hot 93.6°F (34.2°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', 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 (differences in body mass, height, and shape, metabolic differences, pregnancy), and activity. 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 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.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Cahaba Crest, Alabama, during September, the rain falls for 12.1 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Cahaba Crest, there are 149 rainfall days, and 19.88" (505mm) of precipitation is accumulated.

Snowfall

In Cahaba Crest snow does not fall in April through October.

Daylight

In Cahaba Crest, the average length of the day is 12.4h.

Sunshine

In Cahaba Crest, Alabama, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the temperature in September in Cahaba Crest?

In Cahaba Crest, Alabama, in September, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 64.6°F (18.1°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines both air temperature and relative humidity, is evaluated at 93.6°F (34.2°C).

What is the average humidity in September in Cahaba Crest?

In September, the average relative humidity is 74%.

How much does it rain in Cahaba Crest in September?

In Cahaba Crest, Alabama, in September, during 12.1 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

When it does not snow in Cahaba Crest?

In Cahaba Crest snow does not fall in April through October.

What is the average length of the day in September in Cahaba Crest?

In Cahaba Crest, Alabama, the average length of the day in September is 12.4h.

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

In September, the average sunshine is 8.8h.

What is the UV index reading in September in Cahaba Crest?

In Cahaba Crest, Alabama, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Cahaba Crest, AL
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.7°F).

  • Average low temperature in September: 64.6°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).

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

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.98").

Average wind speed in September - Cahaba Crest, AL
  • Average wind speed in September: 4.8mph

The windiest months (with the highest average wind speed) are January and February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

Average humidity in September - Cahaba Crest, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September - Cahaba Crest, AL
  • Average rainfall in September: 1.14"

The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.06").

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

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (7.9 days).

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

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

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

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

Average daylight in September / Average sunshine in September - Cahaba Crest, AL
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 8.8h

Months with the most sunshine are June and July (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

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

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.6 days).

Average UV index in September - Cahaba Crest, AL
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September - Cahaba Crest, AL
  • Average cloud cover in September: 30

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

Average visibility in September - Cahaba Crest, AL
  • Average visibility in September: 6mi

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