September weather forecast
Port Fourchon, LA

Weather in September

The first month of the autumn, September, is also a moderately hot month in Port Fourchon, Louisiana, with an average temperature fluctuating between 84.6°F (29.2°C) and 78.8°F (26°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a warm 84.6°F (29.2°C). In Port Fourchon, the average low-temperature is 78.8°F (26°C).

Heat index

The average heat index in September is appraised at a tropical 93.2°F (34°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like metabolic differences, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Port Fourchon, the average relative humidity in September is 73%.

Rainfall

In September, in Port Fourchon, the rain falls for 17.3 days. Throughout September, 2.17" (55mm) of precipitation is accumulated. Throughout the year, there are 151.9 rainfall days, and 22.01" (559mm) of precipitation is accumulated.

Snowfall

In Port Fourchon, snow does not fall in February through December.

Daylight

The average length of the day in September in Port Fourchon is 12h and 19min.
On the first day of September, sunrise is at 6:38 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:48 pm CDT.

Sunshine

In Port Fourchon, the average sunshine in September is 10.2h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Port Fourchon. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Port Fourchon?

In September, in Port Fourchon, the average high-temperature is 84.6°F (29.2°C), and the average low-temperature is 78.8°F (26°C). in September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 93.2°F (34°C).

What is the average humidity in September in Port Fourchon?

The average relative humidity in September in Port Fourchon, Louisiana, is 73%.

How much does it rain in Port Fourchon in September?

In Port Fourchon, during September, the rain falls for 17.3 days and regularly aggregates up to 2.17" (55mm) of precipitation.

When it does not snow in Port Fourchon?

February through December are months without snowfall in Port Fourchon.

What is the average length of the day in September in Port Fourchon?

In Port Fourchon, Louisiana, the average day length in September is 12h and 19min.

What time are sunrise and sunset in September in Port Fourchon?

On the first day of September, sunrise is at 6:38 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:48 pm CDT.

How long on average sun shines in September in Port Fourchon?

In September, the average sunshine duration in Port Fourchon is 10.2h.

What is the month with the highest UV index in Port Fourchon?

May through September, with an average maximum UV index of 7, are months with the highest UV index in Port Fourchon, Louisiana.

How high is the UV index in September in Port Fourchon?

In Port Fourchon, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Port Fourchon, LA

Average temperature in September - Port Fourchon, LA
  • Average high temperature in September: 84.6°F

The warmest months (with the highest average high temperature) are July and August (86.9°F).
The month with the lowest average high temperature is January (61.7°F).

  • Average low temperature in September: 78.8°F

The month with the highest average low temperature is August (81.3°F).
The coldest month (with the lowest average low temperature) is January (53.1°F).

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Average pressure in September
Port Fourchon, LA

Average pressure in September - Port Fourchon, LA
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

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Average wind speed in September
Port Fourchon, LA

Average wind speed in September - Port Fourchon, LA
  • Average wind speed in September: 8.8mph

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in September
Port Fourchon, LA

Average humidity in September - Port Fourchon, LA
  • Average humidity in September: 73%

The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Port Fourchon, LA

Average rainfall in September - Port Fourchon, LA
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is August (4.72").
The driest months (with the least rainfall) are February and April (0.87").

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Average rainfall days in September
Port Fourchon, LA

Average rainfall days in September - Port Fourchon, LA
  • Average rainfall days in September: 17.3 days

The month with the highest number of rainy days is August (20.7 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall days in September
Port Fourchon, LA

Average snowfall days in September - Port Fourchon, LA
  • Average snowfall days in September: 0 days

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

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Average daylight in September /
Average sunshine in September
Port Fourchon, LA

Average daylight in September / Average sunshine in September - Port Fourchon, LA
  • Average daylight in September: 12h and 19min

The month with the longest days is June (Average daylight: 13h and 59min).
The month with the shortest days is December (Average daylight: 10h and 19min).

  • Average sunshine in September: 10h and 12min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in September
Port Fourchon, LA

Average sunshine days in September - Port Fourchon, LA
  • Average sunshine days in September: 8.6 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is August (6.5 days).

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Average UV index in September
Port Fourchon, LA

Average UV index in September - Port Fourchon, 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 and December (UV index 4).

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Average cloud cover in September
Port Fourchon, LA

Average cloud cover in September - Port Fourchon, LA
  • Average cloud cover in September: 25

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is May (Cloud cover 23).

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Average visibility in September
Port Fourchon, LA

Average visibility in September - Port Fourchon, 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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