September weather forecast
Flowery Branch, GA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Flowery Branch, Georgia, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 63.1°F (17.3°C).

Temperature

With the onset of September, a modest change to a warm 83.1°F (28.4°C) from August's 88.2°F (31.2°C) is noted in high-temperature. Flowery Branch records an average temperature drop to an enjoyable 63.1°F (17.3°C) in September.

Heat index

The heat index in September is estimated at a tropical 89.6°F (32°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
For clarity, heat index numbers account for light winds and areas under shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

The average relative humidity in September in Flowery Branch is 73%.

Rainfall

In Flowery Branch, in September, it is raining for 13.6 days, with typically 2.56" (65mm) of accumulated precipitation. In Flowery Branch, during the entire year, the rain falls for 180.6 days and collects up to 42.4" (1077mm) of precipitation.

Snowfall

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

Daylight

In Flowery Branch, the average length of the day in September is 12h and 22min.
On the first day of September in Flowery Branch, Georgia, sunrise is at 7:09 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:20 pm EDT.

Sunshine

In Flowery Branch, the average sunshine in September is 8.6h.

UV index

In Flowery Branch, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: In September, a regular UV index of 5 translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

How hot is September in Flowery Branch?

In September, in Flowery Branch, the average high-temperature is 83.1°F (28.4°C), and the average low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in September is estimated at 89.6°F (32°C).

What is the average humidity in September in Flowery Branch?

The average relative humidity in September is 73%.

How many days does it rain in September in Flowery Branch?

In Flowery Branch, in September, during 13.6 rainfall days, 2.56" (65mm) of precipitation is typically accumulated.

When it does not snow in Flowery Branch?

April through October are months without snowfall in Flowery Branch.

How many hours of daylight does Flowery Branch have in September?

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

When are sunrise and sunset in September in Flowery Branch?

On the first day of September in Flowery Branch, Georgia, sunrise is at 7:09 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:20 pm EDT.

How long on average sun shines in September in Flowery Branch?

The average sunshine duration in September is 8.6h.

What is the UV index reading in September in Flowery Branch?

In September, the average daily maximum UV index in Flowery Branch, Georgia, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
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
Flowery Branch, GA

Average temperature in September - Flowery Branch, GA
  • Average high temperature in September: 83.1°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in September: 63.1°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

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Average pressure in September
Flowery Branch, GA

Average pressure in September - Flowery Branch, 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
Flowery Branch, GA

Average wind speed in September - Flowery Branch, GA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in September
Flowery Branch, GA

Average humidity in September - Flowery Branch, GA
  • Average humidity in September: 73%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are July and October (72%).

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Average rainfall in September
Flowery Branch, GA

Average rainfall in September - Flowery Branch, GA
  • Average rainfall in September: 2.56"

The wettest month (with the highest rainfall) is August (4.61").
The driest month (with the least rainfall) is October (2.32").

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Average rainfall days in September
Flowery Branch, GA

Average rainfall days in September - Flowery Branch, GA
  • Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is October (9.6 days).

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Average snowfall in September
Flowery Branch, GA

Average snowfall in September - Flowery Branch, GA
  • Average snowfall in September: 0"

The month with the highest snowfall is December (1.54").
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
Flowery Branch, GA

Average snowfall days in September - Flowery Branch, GA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.7 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
Flowery Branch, GA

Average daylight in September / Average sunshine in September - Flowery Branch, 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 4min

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 12min).

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Average sunshine days in September
Flowery Branch, GA

Average sunshine days in September - Flowery Branch, GA
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is July (7.7 days).

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Average UV index in September
Flowery Branch, GA

Average UV index in September - Flowery Branch, GA
  • Average UV index in September: 5

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

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Average cloud cover in September
Flowery Branch, GA

Average cloud cover in September - Flowery Branch, GA
  • Average cloud cover in September: 31

The months with the most cloud cover are February and December (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in September
Flowery Branch, GA

Average visibility in September - Flowery Branch, 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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Flowery Branch, Georgia, USA

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