September weather forecast
Bordelonville, LA

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Weather in September

The first month of the autumn, September, is still a hot month in Bordelonville, Louisiana, with an average temperature ranging between max 87.4°F (30.8°C) and min 68.5°F (20.3°C).

Temperature

As Bordelonville transitions from August to September, the average high-temperatures adjust to a still tropical 87.4°F (30.8°C), nearly the same as the previous 91.2°F (32.9°C). Bordelonville experiences a mean temperature of 68.5°F (20.3°C) during September nights.

Heat index

In September, the average heat index is estimated at a torrid 102.2°F (39°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. 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 are particularly meaningful for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Bordelonville, during September, the rain falls for 13 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Bordelonville, during the entire year, the rain falls for 133.5 days and collects up to 15.51" (394mm) of precipitation.

Snowfall

In Bordelonville, Louisiana, snow does not fall in February through December.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 6:44 am and sunset at 7:30 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:53 pm CDT.

Sunshine

In September, the average sunshine is 9.4h.

UV index

The average daily maximum UV index in September in Bordelonville is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In September, a regular UV index of 6 translates into these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Jul 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

In Bordelonville, 87.4°F (30.8°C) is the average high-temperature and 68.5°F (20.3°C) is the average low-temperature during September. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is estimated at 102.2°F (39°C).

What is the average humidity in September?

In Bordelonville, the average relative humidity in September is 77%.

How many days does it rain in September?

In Bordelonville, during September, the rain falls for 13 days and regularly aggregates up to 1.02" (26mm) of precipitation.

When it does not snow?

February through December are months without snowfall.

How many hours of daylight does Bordelonville have in September?

The average day length in September is 12h and 20min.

When are sunrise and sunset in September in Bordelonville?

On the first day of September, sunrise is at 6:44 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:53 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 9.4h.

How high is the UV index in September?

In Bordelonville, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's 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
Bordelonville, LA

Average temperature in September - Bordelonville, LA
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in September: 68.5°F

The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

Average pressure in September
Bordelonville, LA

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

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Bordelonville, LA

Average wind speed in September - Bordelonville, LA
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).

Average humidity in September
Bordelonville, LA

Average humidity in September - Bordelonville, LA
  • Average humidity in September: 77%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Bordelonville, LA

Average rainfall in September - Bordelonville, LA
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is August (1.73").
The driest month (with the least rainfall) is November (0.94").

Average rainfall days in September
Bordelonville, LA

Average rainfall days in September - Bordelonville, LA
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is August (16.1 days).
The month with the least rainy days is November (7.1 days).

Average snowfall in September
Bordelonville, LA

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

The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Bordelonville, LA

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

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

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

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

  • Average sunshine in September: 9h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days in September
Bordelonville, LA

Average sunshine days in September - Bordelonville, LA
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is August (11.2 days).

Average UV index in September
Bordelonville, LA

Average UV index in September - Bordelonville, 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).

Average cloud cover in September
Bordelonville, LA

Average cloud cover in September - Bordelonville, LA
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 28).

Average visibility in September
Bordelonville, LA

Average visibility in September - Bordelonville, LA
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).

Bordelonville, Louisiana, USA

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