September weather forecast
Austell, GA

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Weather in September

As September makes its mark in Austell, the high summer temperatures start to dip. Temperatures range from 65.1°F (18.4°C) to 83.7°F (28.7°C), indicating the onset of the cooler autumn season. The rainfall in Austell decreases significantly, resulting in drier weather as compared to August. Despite the reduction in rainfall, the city sees a rise in humidity levels. Austell's wind speeds also begin to increase, contributing to the start of the cooler season.

Temperature

Austell's weather, upon September's arrival, documents an average high-temperature of a warm 83.7°F (28.7°C), nearly identical to the prior month. An average low-temperature of 65.1°F (18.4°C) is observed during the September nights.

Heat index

The heat index for September is evaluated at a tropical 89.6°F (32°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
Records show heat index calculations are tailored for shaded regions and mild winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

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

Rainfall

In Austell, in September, during 13.3 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, in Austell, there are 178.7 rainfall days, and 41.5" (1054mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 7:12 am and sunset at 8:03 pm. On the last day of September, in Austell, sunrise is at 7:32 am and sunset at 7:23 pm EDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 5 in September leads to these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

How hot is September in Austell?

In September, the average high-temperature and low-temperature in Austell are 83.7°F (28.7°C) and 65.1°F (18.4°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 89.6°F (32°C).

What is the average humidity in September in Austell?

The average relative humidity in September in Austell, Georgia, is 72%.

How much does it rain in Austell in September?

In Austell, Georgia, in September, during 13.3 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

When it does not snow in Austell?

In Austell, Georgia, snow does not fall in April through October.

How many hours of daylight does Austell have in September?

In September, the average day length in Austell is 12h and 22min.

When are sunrise and sunset in September in Austell?

On the first day of September in Austell, Georgia, sunrise is at 7:12 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:23 pm EDT.

How many hours of sunshine does Austell have in September?

In Austell, the average sunshine duration in September is 8.6h.

What is the UV index intensity in September in Austell?

In September, the average daily maximum UV index in Austell is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Austell, GA

Average temperature in September - Austell, GA
  • Average high temperature in September: 83.7°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (49.8°F).

  • Average low temperature in September: 65.1°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 (34.2°F).

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Average pressure in September
Austell, GA

Average pressure in September - Austell, GA
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in September
Austell, GA

Average wind speed in September - Austell, GA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

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Average humidity in September
Austell, GA

Average humidity in September - Austell, GA
  • Average humidity in September: 72%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are July and August (71%).

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Average rainfall in September
Austell, GA

Average rainfall in September - Austell, GA
  • Average rainfall in September: 2.8"

The wettest month (with the highest rainfall) is August (5.08").
The driest month (with the least rainfall) is October (2.17").

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Average rainfall days in September
Austell, GA

Average rainfall days in September - Austell, GA
  • Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is July (22.1 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in September
Austell, GA

Average snowfall in September - Austell, GA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Austell, GA

Average snowfall days in September - Austell, GA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Austell, GA

Average daylight in September / Average sunshine in September - Austell, GA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in September
Austell, GA

Average sunshine days in September - Austell, GA
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (7.6 days).

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Average UV index in September
Austell, GA

Average UV index in September - Austell, GA
  • Average UV index in September: 5

The 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).

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Average cloud cover in September
Austell, GA

Average cloud cover in September - Austell, GA
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in September
Austell, GA

Average visibility in September - Austell, GA
  • 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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Austell, Georgia, USA

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