September weather forecast
Chamblee, LA

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Weather in September

The first month of the autumn, September, is also a hot month in Chamblee, Louisiana, with an average temperature varying between 68°F (20°C) and 87.8°F (31°C).

Temperature

With the arrival of September, Chamblee's average high-temperature registers at a still tropical 87.8°F (31°C), indicating a subtle variation from the previous month. September in Chamblee generally records an average low-temperature of 68°F (20°C).

Heat index

September's average heat index is calculated to be a fiery hot 102.2°F (39°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. 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 'apparent temperature' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Chamblee, in September, during 12.7 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, in Chamblee, there are 154.1 rainfall days, and 35.12" (892mm) of precipitation is accumulated.

Snowfall

April through December are months without snowfall in Chamblee.

Daylight

The average length of the day in September is 12h and 21min.
On the first day of September in Chamblee, Louisiana, sunrise is at 6:41 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:51 pm CDT.

Sunshine

The average sunshine in September is 9.7h.

UV index

In September, the average daily maximum UV index in Chamblee is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

How hot is it in Chamblee in September?

In September, the average high-temperature and low-temperature are 87.8°F (31°C) and 68°F (20°C) respectively. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in September is calculated to be 102.2°F (39°C).

What is the average humidity in September in Chamblee?

The average relative humidity in September in Chamblee is 74%.

How many days does it rain in September in Chamblee?

In Chamblee, Louisiana, during September, the rain falls for 12.7 days and regularly aggregates up to 2.2" (56mm) of precipitation.

When it does not snow in Chamblee?

In Chamblee, Louisiana, snow does not fall in April through December.

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

In Chamblee, Louisiana, the average day length in September is 12h and 21min.

When is the sunrise / sunset in September in Chamblee?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 7:29 pm. On the last day of the month, in Chamblee, sunrise is at 6:59 am and sunset at 6:51 pm CDT.

How many hours of sunshine does Chamblee have in September?

In Chamblee, Louisiana, the average sunshine duration in September is 9.7h.

What is the UV index reading in September in Chamblee?

In September, the average daily maximum UV index in Chamblee, Louisiana, 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
Chamblee, LA

Average temperature in September - Chamblee, LA
  • Average high temperature in September: 87.8°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 (55°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).

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Average pressure in September
Chamblee, LA

Average pressure in September - Chamblee, LA
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in September
Chamblee, LA

Average wind speed in September - Chamblee, LA
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and September (5.3mph).

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Average humidity in September
Chamblee, LA

Average humidity in September - Chamblee, LA
  • Average humidity in September: 74%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in September
Chamblee, LA

Average rainfall in September - Chamblee, LA
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is November (2.13").

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Average rainfall days in September
Chamblee, LA

Average rainfall days in September - Chamblee, LA
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is August (15.5 days).
The month with the least rainy days is October (8.5 days).

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Average snowfall in September
Chamblee, LA

Average snowfall in September - Chamblee, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Chamblee, LA

Average snowfall days in September - Chamblee, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in September /
Average sunshine in September
Chamblee, LA

Average daylight in September / Average sunshine in September - Chamblee, LA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

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Average sunshine days in September
Chamblee, LA

Average sunshine days in September - Chamblee, LA
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is February (13.3 days).

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Average UV index in September
Chamblee, LA

Average UV index in September - Chamblee, LA
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in September
Chamblee, LA

Average cloud cover in September - Chamblee, LA
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and October (Cloud cover 28).

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Average visibility in September
Chamblee, LA

Average visibility in September - Chamblee, LA
  • 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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Chamblee, Louisiana, USA

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