September weather forecast
Chestnut Mountain, GA

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Weather in September

September, the first month of the autumn in Chestnut Mountain, is still a warm month, with an average temperature varying between 83.1°F (28.4°C) and 63.1°F (17.3°C).

Temperature

Transitioning into September, Chestnut Mountain experiences an average high-temperature of a warm 83.1°F (28.4°C), marking a minor shift from the preceding month. Chestnut Mountain experiences an average low-temperature reading of 63.1°F (17.3°C) throughout September.

Heat index

For September, the heat index is calculated to be a tropical 89.6°F (32°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

In September, the average relative humidity in Chestnut Mountain is 73%.

Rainfall

In Chestnut Mountain, Georgia, in September, it is raining for 13.6 days, with typically 2.56" (65mm) of accumulated precipitation. Throughout the year, in Chestnut Mountain, there are 180.6 rainfall days, and 42.4" (1077mm) of precipitation is accumulated.

Snowfall

In Chestnut Mountain, Georgia, snow does not fall in April through October.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September in Chestnut Mountain, sunrise is at 7:09 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:20 pm EDT.

Sunshine

In September, the average sunshine in Chestnut Mountain is 8.6h.

UV index

In September, the average daily maximum UV index in Chestnut Mountain, Georgia, is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 5 during September leads to these advisories:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September in Chestnut Mountain?

During September, Chestnut Mountain experiences an average high-temperature of 83.1°F (28.4°C) and a low-temperature of 63.1°F (17.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 89.6°F (32°C).

What is the average humidity in September in Chestnut Mountain?

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

How many days does it rain in September in Chestnut Mountain?

In Chestnut Mountain, during September, the rain falls for 13.6 days and regularly aggregates up to 2.56" (65mm) of precipitation.

When it does not snow in Chestnut Mountain?

In Chestnut Mountain, Georgia, snow does not fall in April through October.

What is the average length of the day in September in Chestnut Mountain?

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

When is the sunrise / sunset in September in Chestnut Mountain?

On the first day of September in Chestnut Mountain, Georgia, sunrise is at 7:09 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:20 pm EDT.

How many hours of sunshine does Chestnut Mountain have in September?

The average sunshine duration in September in Chestnut Mountain is 8.6h.

How high is the UV index in September in Chestnut Mountain?

In Chestnut Mountain, Georgia, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Chestnut Mountain, GA

Average temperature in September - Chestnut Mountain, 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).

Average pressure in September
Chestnut Mountain, GA

Average pressure in September - Chestnut Mountain, 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).

Average wind speed in September
Chestnut Mountain, GA

Average wind speed in September - Chestnut Mountain, 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).

Average humidity in September
Chestnut Mountain, GA

Average humidity in September - Chestnut Mountain, 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%).

Average rainfall in September
Chestnut Mountain, GA

Average rainfall in September - Chestnut Mountain, 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").

Average rainfall days in September
Chestnut Mountain, GA

Average rainfall days in September - Chestnut Mountain, 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).

Average snowfall in September
Chestnut Mountain, GA

Average snowfall in September - Chestnut Mountain, 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").

Average snowfall days in September
Chestnut Mountain, GA

Average snowfall days in September - Chestnut Mountain, 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).

Average daylight in September /
Average sunshine in September
Chestnut Mountain, GA

Average daylight in September / Average sunshine in September - Chestnut Mountain, 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).

Average sunshine days in September
Chestnut Mountain, GA

Average sunshine days in September - Chestnut Mountain, 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).

Average UV index in September
Chestnut Mountain, GA

Average UV index in September - Chestnut Mountain, 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
Chestnut Mountain, GA

Average cloud cover in September - Chestnut Mountain, 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).

Average visibility in September
Chestnut Mountain, GA

Average visibility in September - Chestnut Mountain, 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).

Chestnut Mountain, Georgia, USA

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