September weather forecast and climate
Carrollton, AL

The first month of the autumn, September, is still a hot month in Carrollton, Alabama, with average temperature fluctuating between 86.7°F (30.4°C) and 66.7°F (19.3°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still tropical 86.7°F (30.4°C). The average low-temperature, in September, is 66.7°F (19.3°C).

Heat index

The average heat index is evaluated at a sweltering 97.9°F (36.6°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. 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', 'felt air temperature', 'feels like', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, metabolic differences, differences in body mass, height, and shape, and wind affect individual temperature impact. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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 72%.

Rainfall

In Carrollton, Alabama, during 12.6 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In Carrollton, during the entire year, the rain falls for 168.1 days and collects up to 40.94" (1040mm) of precipitation.

Snowfall

In Carrollton, Alabama, snow does not fall in March through October.

Daylight

In September, the average length of the day is 12.4h.

Sunshine

The average sunshine in Carrollton, Alabama, is 9.3h.

UV index

In Carrollton, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 interpret into the following advice:
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.

What is the temperature in September in Carrollton?

The average high-temperature, in September, in Carrollton, Alabama, is 86.7°F (30.4°C), while the average low-temperature is 66.7°F (19.3°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines air temperature and relative humidity, is evaluated at 97.9°F (36.6°C).

What is the average humidity in September in Carrollton?

The average relative humidity in September is 72%.

How many days does it rain in September in Carrollton?

In September, the rain falls for 12.6 days. Throughout September, 2.44" (62mm) of precipitation is accumulated.

When it does not snow in Carrollton?

In Carrollton snow does not fall in March through October.

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

The average length of the day in September in Carrollton is 12.4h.

How long on average sun shines in September in Carrollton?

In September, the average sunshine in Carrollton, Alabama, is 9.3h.

How high is the UV index in September in Carrollton?

In September, the average daily maximum UV index in Carrollton, Alabama, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Carrollton, AL
  • Average high temperature in September: 86.7°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (52.5°F).

  • Average low temperature in September: 66.7°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (37°F).

Average pressure in September - Carrollton, AL
  • Average pressure in September: 30"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.97").

Average wind speed in September - Carrollton, AL
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are January, February and March (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in September - Carrollton, 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%).

Average rainfall in September - Carrollton, AL
  • Average rainfall in September: 2.44"

The wettest month (with the highest rainfall) is April (4.57").
The driest month (with the least rainfall) is October (2.4").

Average rainfall days in September - Carrollton, AL
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is November (8.6 days).

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

The month with the highest snowfall is January (0.35").
Months with the least snowfall are March, April, May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is January (1.1 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 - Carrollton, AL
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 9.3h

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

Average sunshine days in September - Carrollton, AL
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is July (9 days).

Average UV index in September - Carrollton, 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).

Average cloud cover in September - Carrollton, AL
  • Average cloud cover in September: 28

Months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 28).

Average visibility in September - Carrollton, 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).