September weather forecast
Grantville, GA

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Weather in September

September, the first month of the autumn in Grantville, is also a moderately hot month, with an average temperature varying between 83.7°F (28.7°C) and 64.8°F (18.2°C).

Temperature

With the transition into September, Grantville notes an average high-temperature of a warm 83.7°F (28.7°C), closely resembling August. An average low-temperature of 64.8°F (18.2°C) is expected in Grantville during September.

Heat index

For September, the heat index is evaluated at a tropical 91.4°F (33°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

In September, the average relative humidity in Grantville is 74%.

Rainfall

The month with the least rainfall is September, when the rain falls for 8.4 days and typically collects 0.35" (9mm) of precipitation.

Snowfall

In Grantville, snow does not fall in February, April through December.

Daylight

In Grantville, the average length of the day in September is 12h and 22min.
On the first day of September in Grantville, sunrise is at 7:14 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:24 pm EDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during September leads to these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

Is it hot in Grantville during September?

The average high-temperature and low-temperature during September are 83.7°F (28.7°C) and 64.8°F (18.2°C) respectively. In September, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 91.4°F (33°C).

What is the average humidity in September in Grantville?

In Grantville, the average relative humidity in September is 74%.

What is the driest month in Grantville?

The month with the least rainfall is September, when the rain falls for 8.4 days and typically collects 0.35" (9mm) of precipitation.

How much does it rain in Grantville in September?

In Grantville, Georgia, in September, during 8.4 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

When it does not snow in Grantville?

In Grantville, Georgia, snow does not fall in February, April through December.

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

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

What time are sunrise and sunset in September in Grantville?

On the first day of September in Grantville, Georgia, sunrise is at 7:14 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:24 pm EDT.

How many hours of sunshine does Grantville have in September?

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

What is the UV index reading in September in Grantville?

In September, the average daily maximum UV index in Grantville is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Grantville, GA

Average temperature in September - Grantville, GA
  • Average high temperature in September: 83.7°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 (51.8°F).

  • Average low temperature in September: 64.8°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).

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Average pressure in September
Grantville, GA

Average pressure in September - Grantville, GA
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in September
Grantville, GA

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

The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in September
Grantville, GA

Average humidity in September - Grantville, GA
  • Average humidity in September: 74%

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

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Average rainfall in September
Grantville, GA

Average rainfall in September - Grantville, GA
  • Average rainfall in September: 0.35"

The wettest month (with the highest rainfall) is August (1.1").
The driest month (with the least rainfall) is September (0.35").

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Average rainfall days in September
Grantville, GA

Average rainfall days in September - Grantville, GA
  • Average rainfall days in September: 8.4 days

The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is October (5.2 days).

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Average snowfall in September
Grantville, GA

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

The months with the highest snowfall are January and March (0.04").
The months with the least snowfall are February, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Grantville, GA

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

The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is 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
Grantville, GA

Average sunshine days in September - Grantville, GA
  • Average sunshine days in September: 18.7 days

The month with the most sunshine days is October (24.3 days).
The month with the least sunshine days is July (12.3 days).

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Average UV index in September
Grantville, GA

Average UV index in September - Grantville, GA
  • Average UV index in September: 6

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Grantville, GA

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

The month with the most cloud cover is December (Cloud cover 46).
The months with the least cloud cover are June, September and October (Cloud cover 31).

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Average visibility in September
Grantville, GA

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

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

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Grantville, Georgia, USA

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