September weather forecast
Athens, GA

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The historic city hall tower at dusk in Athens, Georgia, along with other neon-lit houses in the vicinity
The historic city hall tower at dusk in Athens, Georgia, along with other neon-lit houses in the vicinity

Weather in September

As autumn sets in September, Athens undergoes a marked change in weather. The dearest departure from August is the substantial decrease in temperature, hinting at the region's shift from summer. The onset of autumn also implies dwindling hours of sunshine and daylight. High humidity and an uptick in average wind speed cater to a more refreshing, less sweltering environment. The city of Athens, blanketed in colorful autumn leaves, creates an unforgettable sight this month.

Temperature

September's onset brings an average high-temperature of a moderately hot 84.4°F (29.1°C), showing a minute difference from August's 89.4°F (31.9°C). Throughout September, Athens experiences a low-temperature average of 64.2°F (17.9°C).

Heat index

For September, the heat index is computed to be a hot 93.2°F (34°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

In September, the average relative humidity is 73%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September in Athens, Georgia, is 12h and 22min.
On the first day of September, sunrise is at 7:07 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:18 pm EDT.

Sunshine

The average sunshine in September in Athens is 8.5h.

UV index

In Athens, Georgia, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 5 in September translates into these instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

How hot is September in Athens?

An average high-temperature, in September, in Athens, is 84.4°F (29.1°C) and the average low-temperature is 64.2°F (17.9°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 93.2°F (34°C).

What is the average humidity in September in Athens?

In Athens, Georgia, the average relative humidity in September is 73%.

What is the driest month in Athens?

September is the month with the least rainfall in Athens, Georgia. Rain falls for 12.2 days and accumulates 1.93" (49mm) of precipitation.

How many days does it rain in September in Athens?

In Athens, in September, during 12.2 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow in Athens?

April through November are months without snowfall in Athens, Georgia.

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

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

When is the sunrise / sunset in September in Athens?

In September, on the first day of the month, sunrise is at 7:07 am and sunset at 7:58 pm. On the last day of the month, in Athens, sunrise is at 7:27 am and sunset at 7:18 pm EDT.

How long on average sun shines in September in Athens?

The average sunshine duration in September in Athens, Georgia, is 8.5h.

How high is the UV index in September in Athens?

The average daily maximum UV index in September in Athens is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to 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
Athens, GA

Average temperature in September - Athens, GA
  • Average high temperature in September: 84.4°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (51.1°F).

  • Average low temperature in September: 64.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).

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Average pressure in September
Athens, GA

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

The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in September
Athens, GA

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

The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in September
Athens, GA

Average humidity in September - Athens, GA
  • Average humidity in September: 73%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are July, October and November (72%).

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Average rainfall in September
Athens, GA

Average rainfall in September - Athens, GA
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in September
Athens, GA

Average rainfall days in September - Athens, GA
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is August (17.7 days).
The months with the least rainy days are October and November (9.4 days).

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Average snowfall in September
Athens, GA

Average snowfall in September - Athens, 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, October and November (0").

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Average snowfall days in September
Athens, GA

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

The month with the highest number of snowfall days is January (1.1 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Athens, 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: 9h and 54min).

  • Average sunshine in September: 8h and 3min

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

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Average sunshine days in September
Athens, GA

Average sunshine days in September - Athens, GA
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is June (11.4 days).

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Average UV index in September
Athens, GA

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

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

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Average cloud cover in September
Athens, GA

Average cloud cover in September - Athens, GA
  • Average cloud cover in September: 33

The months with the most cloud cover are February and December (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in September
Athens, GA

Average visibility in September - Athens, GA
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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Athens, Georgia, USA

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