September weather forecast
Acworth, GA

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Weather in September

September in Acworth, marks a significant shift in the climate, signaling the arrival of fall. The fall prevails in temperatures with a substantial drop, setting in relief from the summer heat. The amount of rainfall lessens considerably after the high of July and August, translating to drier and less humid conditions. The cloud percentage remain the same as previous month, implying residual cloudiness. With wind speeds picking up slightly, the month gets a refreshing feel that triggers the onset of the pleasant season.

Temperature

September's onset introduces a mild reduction in the average high-temperature, from a hot 89.1°F (31.7°C) in August to a warm 83.7°F (28.7°C). Throughout the month of September, Acworth witnesses an average temperature of 64.9°F (18.3°C).

Heat index

In September, the average heat index is evaluated at a tropical 89.6°F (32°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.
Consider that heat index readings are for situations in the shade and light wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

The average relative humidity in September is 71%.

Rainfall

In Acworth, during September, the rain falls for 13.5 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, there are 186.9 rainfall days, and 45.59" (1158mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 7:12 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:23 pm EDT.

Sunshine

In September, the average sunshine is 8.4h.

UV index

In Acworth, Georgia, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

The average high-temperature, in September, in Acworth, is 83.7°F (28.7°C), while the average low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in September is evaluated at 89.6°F (32°C).

What is the average humidity in September?

In Acworth, the average relative humidity in September is 71%.

How much does it rain in September?

In Acworth, in September, during 13.5 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

When it does not snow in Acworth?

In Acworth, snow does not fall in April through October.

How many hours of daylight does Acworth have in September?

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

When are sunrise and sunset in September?

On the first day of September, sunrise is at 7:12 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:23 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.4h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents 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
Acworth, GA

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

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (49.1°F).

  • Average low temperature in September: 64.9°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).

Average pressure in September
Acworth, GA

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

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

Average wind speed in September
Acworth, GA

Average wind speed in September - Acworth, 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).

Average humidity in September
Acworth, GA

Average humidity in September - Acworth, GA
  • Average humidity in September: 71%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are July and August (70%).

Average rainfall in September
Acworth, GA

Average rainfall in September - Acworth, GA
  • Average rainfall in September: 2.99"

The wettest month (with the highest rainfall) is August (5.47").
The driest month (with the least rainfall) is October (2.44").

Average rainfall days in September
Acworth, GA

Average rainfall days in September - Acworth, GA
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is July (21.8 days).
The month with the least rainy days is November (10.2 days).

Average snowfall in September
Acworth, GA

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

The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Acworth, GA

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

The month with the highest number of snowfall days is January (1.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Acworth, 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 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in September
Acworth, GA

Average sunshine days in September - Acworth, GA
  • Average sunshine days in September: 14.3 days

The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is July (8.1 days).

Average UV index in September
Acworth, GA

Average UV index in September - Acworth, 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).

Average cloud cover in September
Acworth, GA

Average cloud cover in September - Acworth, GA
  • Average cloud cover in September: 32

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 31).

Average visibility in September
Acworth, GA

Average visibility in September - Acworth, 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).

Acworth, Georgia, USA

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