September weather forecast
Southdown Plantation, LA

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Weather in September

The first month of the autumn, September, is still a hot month in Southdown Plantation, Louisiana, with an average temperature varying between 72°F (22.2°C) and 86.9°F (30.5°C).

Temperature

Southdown Plantation records an average high-temperature of a still tropical 86.9°F (30.5°C) in September, maintaining a close correlation with August's 89.8°F (32.1°C). In Southdown Plantation, the September nights cool down to an average low of 72°F (22.2°C).

Heat index

September's average heat index is estimated at a very hot 102.2°F (39°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

February, July through September and December, with an average relative humidity of 79%, are the most humid months in Southdown Plantation.

Rainfall

In Southdown Plantation, in September, it is raining for 18.6 days, with typically 2.36" (60mm) of accumulated precipitation. In Southdown Plantation, during the entire year, the rain falls for 172.6 days and collects up to 30.2" (767mm) of precipitation.

Snowfall

In Southdown Plantation, snow does not fall in February through December.

Daylight

In Southdown Plantation, the average length of the day in September is 12h and 20min.
On the first day of September in Southdown Plantation, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:49 pm CDT.

Sunshine

In September, the average sunshine in Southdown Plantation is 10.1h.

UV index

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

How hot is September in Southdown Plantation?

In September, in Southdown Plantation, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 72°F (22.2°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 102.2°F (39°C).

What are the most humid months in Southdown Plantation?

The months with the highest humidity in Southdown Plantation are February, July through September and December, with an average relative humidity of 79%.

What is the average humidity in September in Southdown Plantation?

In Southdown Plantation, the average relative humidity in September is 79%.

How many days does it rain in September in Southdown Plantation?

In Southdown Plantation, in September, it is raining for 18.6 days, with typically 2.36" (60mm) of accumulated precipitation.

When it does not snow in Southdown Plantation?

February through December are months without snowfall in Southdown Plantation.

What is the average length of the day in September in Southdown Plantation?

In Southdown Plantation, Louisiana, the average day length in September is 12h and 20min.

When are sunrise and sunset in September in Southdown Plantation?

On the first day of September in Southdown Plantation, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:49 pm CDT.

How many hours of sunshine does Southdown Plantation have in September?

In Southdown Plantation, Louisiana, the average sunshine duration in September is 10.1h.

What is the UV index reading in September in Southdown Plantation?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health 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
Southdown Plantation, LA

Average temperature in September - Southdown Plantation, LA
  • Average high temperature in September: 86.9°F

The warmest months (with the highest average high temperature) are July and August (89.8°F).
The month with the lowest average high temperature is January (60.3°F).

  • Average low temperature in September: 72°F

The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).

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Average pressure in September
Southdown Plantation, LA

Average pressure in September - Southdown Plantation, LA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).

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Average wind speed in September
Southdown Plantation, LA

Average wind speed in September - Southdown Plantation, LA
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in September
Southdown Plantation, LA

Average humidity in September - Southdown Plantation, LA
  • Average humidity in September: 79%

The months with the highest relative humidity are February, July, August, September and December (79%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in September
Southdown Plantation, LA

Average rainfall in September - Southdown Plantation, LA
  • Average rainfall in September: 2.36"

The wettest month (with the highest rainfall) is July (4.88").
The driest month (with the least rainfall) is November (1.26").

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Average rainfall days in September
Southdown Plantation, LA

Average rainfall days in September - Southdown Plantation, LA
  • Average rainfall days in September: 18.6 days

The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8 days).

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Average snowfall in September
Southdown Plantation, LA

Average snowfall in September - Southdown Plantation, LA
  • Average snowfall in September: 0"

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

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Average snowfall days in September
Southdown Plantation, LA

Average snowfall days in September - Southdown Plantation, LA
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Southdown Plantation, LA

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

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

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is June (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
Southdown Plantation, LA

Average sunshine days in September - Southdown Plantation, LA
  • Average sunshine days in September: 8.8 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (6.4 days).

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Average UV index in September
Southdown Plantation, LA

Average UV index in September - Southdown Plantation, LA
  • Average UV index in September: 6

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

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Average cloud cover in September
Southdown Plantation, LA

Average cloud cover in September - Southdown Plantation, LA
  • Average cloud cover in September: 27

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 25).

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Average visibility in September
Southdown Plantation, LA

Average visibility in September - Southdown Plantation, 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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Southdown Plantation, Louisiana, USA

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