September weather forecast
Atlanta, GA

Beautiful sky and cityscape of Atlanta in Georgia, USA
Beautiful sky and cityscape of Atlanta in Georgia, USA

Weather in September

September, the first month of the autumn in Atlanta, is also a moderately hot month, with an average temperature ranging between min 65.5°F (18.6°C) and max 84.2°F (29°C).

Temperature

In Atlanta, Georgia, the average high-temperature in September is relatively the same as in August - a moderately hot 84.2°F (29°C). In Atlanta, the average low-temperature is 65.5°F (18.6°C).

Heat index

In September, the average heat index is appraised at a hot 90.9°F (32.7°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 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, metabolic differences, wind). Be aware that direct exposure to sunlight increases heat impact and may raise the 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.

Humidity

In September, the average relative humidity is 70%.

Rainfall

The month with the least rainfall in Atlanta is September, when the rain falls for 8.6 days and typically collects 0.55" (14mm) of precipitation.

Snowfall

In Atlanta, snow does not fall in April through November.

Daylight

In Atlanta, the average length of the day in September is 12h and 22min.
On the first day of September in Atlanta, sunrise is at 7:11 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:23 pm EDT.

Sunshine

In Atlanta, the average sunshine in September is 8.7h.

UV index

In Atlanta, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the temperature in September in Atlanta?

In Atlanta, Georgia, in September, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 65.5°F (18.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is appraised at 90.9°F (32.7°C).

What is the average humidity in September in Atlanta?

In Atlanta, Georgia, the average relative humidity in September is 70%.

What is the driest month in Atlanta?

The month with the least rainfall is September, when the rain falls for 8.6 days and typically collects 0.55" (14mm) of precipitation.

How many days does it rain in September in Atlanta?

In September, in Atlanta, the rain falls for 8.6 days. Throughout September, 0.55" (14mm) of precipitation is accumulated.

When it does not snow in Atlanta?

In Atlanta, Georgia, snow does not fall in April through November.

How many hours of daylight does Atlanta have in September?

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

When is the sunrise / sunset in September in Atlanta?

In September, on the first day of the month, sunrise is at 7:11 am and sunset at 8:03 pm. On the last day of the month, in Atlanta, Georgia, sunrise is at 7:31 am and sunset at 7:23 pm EDT.

How many hours of sunshine does Atlanta have in September?

In September, the average sunshine duration in Atlanta, Georgia, is 8.7h.

What is the UV index intensity in September in Atlanta?

The average daily maximum UV index in September in Atlanta, Georgia, is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Atlanta, GA

Average temperature in September - Atlanta, GA
  • Average high temperature in September: 84.2°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 (50.5°F).

  • Average low temperature in September: 65.5°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 (34.9°F).

[Resources]

Average pressure in September
Atlanta, GA

Average pressure in September - Atlanta, 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).

[Resources]

Average wind speed in September
Atlanta, GA

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

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

[Resources]

Average humidity in September
Atlanta, GA

Average humidity in September - Atlanta, GA
  • Average humidity in September: 70%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are July and August (69%).

[Resources]

Average rainfall in September
Atlanta, GA

Average rainfall in September - Atlanta, GA
  • Average rainfall in September: 0.55"

The wettest month (with the highest rainfall) is August (2.32").
The driest month (with the least rainfall) is September (0.55").

[Resources]

Average rainfall days in September
Atlanta, GA

Average rainfall days in September - Atlanta, GA
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is August (17.1 days).
The month with the least rainy days is November (6.9 days).

[Resources]

Average snowfall in September
Atlanta, GA

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

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

[Resources]

Average snowfall days in September
Atlanta, GA

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

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

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

Average daylight in September / Average sunshine in September - Atlanta, GA
  • Average daylight in September: 12h and 22min

The month with the longest days is June (Average daylight: 14h and 22min).
The month with the shortest days is December (Average daylight: 9h and 58min).

  • Average sunshine in September: 8h and 42min

The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

[Resources]

Average sunshine days in September
Atlanta, GA

Average sunshine days in September - Atlanta, GA
  • Average sunshine days in September: 19.2 days

The month with the most sunshine days is October (22.6 days).
The month with the least sunshine days is July (10.9 days).

[Resources]

Average UV index in September
Atlanta, GA

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

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

[Resources]

Average cloud cover in September
Atlanta, GA

Average cloud cover in September - Atlanta, GA
  • Average cloud cover in September: 30

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 29).

[Resources]

Average visibility in September
Atlanta, GA

Average visibility in September - Atlanta, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location