September weather forecast
White Plantation, LA

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Weather in September

The first month of the autumn, September, is still a tropical month in White Plantation, Louisiana, with an average temperature fluctuating between 72.1°F (22.3°C) and 86.7°F (30.4°C).

Temperature

With September's arrival, White Plantation's weather records an average high-temperature of a still tropical 86.7°F (30.4°C), marking little difference from August's 89.2°F (31.8°C). Throughout September, White Plantation experiences a low-temperature average of 72.1°F (22.3°C).

Heat index

September's average heat index is appraised at a torrid 102.2°F (39°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

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

Rainfall

In White Plantation, in September, during 19.1 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. In White Plantation, during the entire year, the rain falls for 166.9 days and collects up to 25.39" (645mm) of precipitation.

Snowfall

February through November are months without snowfall.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:41 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:49 pm CDT.

Sunshine

In September, the average sunshine is 10.3h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in White Plantation. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Jul 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

An average high-temperature, in September, in White Plantation, is 86.7°F (30.4°C) and the average low-temperature is 72.1°F (22.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is appraised at 102.2°F (39°C).

What is the most humid month?

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

What is the average humidity in September?

In September, the average relative humidity is 79%.

How many days does it rain in September?

In September, the rain falls for 19.1 days. Throughout September, 1.93" (49mm) of precipitation is accumulated.

When it does not snow?

February through November are months without snowfall.

How many hours of daylight does White Plantation have in September?

In September, the average day length is 12h and 20min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:41 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 long on average sun shines in September?

In September, the average sunshine duration in White Plantation is 10.3h.

When is the highest UV index?

May through September, with an average maximum UV index of 7, are months with the highest UV index in White Plantation.

What is the UV index reading in September?

In White Plantation, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
White Plantation, LA

Average temperature in September - White Plantation, LA
  • Average high temperature in September: 86.7°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (60.8°F).

  • Average low temperature in September: 72.1°F

The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (46.2°F).

Average pressure in September
White Plantation, LA

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in September
White Plantation, LA

Average wind speed in September - White Plantation, LA
  • Average wind speed in September: 5.5mph

The windiest months (with the highest average wind speed) are February and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in September
White Plantation, LA

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

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

Average rainfall in September
White Plantation, LA

Average rainfall in September - White Plantation, LA
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is July (4.61").
The driest month (with the least rainfall) is November (1.14").

Average rainfall days in September
White Plantation, LA

Average rainfall days in September - White Plantation, LA
  • Average rainfall days in September: 19.1 days

The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (7.2 days).

Average snowfall days in September
White Plantation, LA

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

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - White 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 2min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in September
White Plantation, LA

Average sunshine days in September - White Plantation, LA
  • Average sunshine days in September: 8.2 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is August (5.8 days).

Average UV index in September
White Plantation, LA

Average UV index in September - White Plantation, LA
  • Average UV index in September: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, November and December (UV index 4).

Average cloud cover in September
White Plantation, LA

Average cloud cover in September - White Plantation, LA
  • Average cloud cover in September: 26

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 24).

Average visibility in September
White Plantation, LA

Average visibility in September - White 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).

White Plantation, Louisiana, USA

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