September weather forecast
Arabi, LA

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Weather in September

The first month of the autumn, September, is still a hot month in Arabi, Louisiana, with an average temperature ranging between min 76.3°F (24.6°C) and max 86.5°F (30.3°C).

Temperature

September's onset records an average high-temperature of a still tropical 86.5°F (30.3°C), a near match to August's 89.4°F (31.9°C). September's average low-temperature reading settles at a warm 76.3°F (24.6°C).

Heat index

For September, the heat index is estimated at a fiery hot 98.6°F (37°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are essentially critical for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In Arabi, during September, the rain falls for 11.7 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Arabi, Louisiana, during the entire year, the rain falls for 112.1 days and collects up to 9.37" (238mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:46 pm CDT.

Sunshine

In Arabi, Louisiana, the average sunshine in September is 10.1h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

In September, the average high-temperature and low-temperature are 86.5°F (30.3°C) and 76.3°F (24.6°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is estimated at 98.6°F (37°C).

What is the average humidity in September?

The average relative humidity in September in Arabi is 73%.

How many days does it rain in September?

In September, the rain falls for 11.7 days. Throughout September, 0.47" (12mm) of precipitation is accumulated.

When it does not snow?

In Arabi, snow does not fall in February through December.

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:37 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:46 pm CDT.

How long on average sun shines in September?

In Arabi, the average sunshine duration in September is 10.1h.

What is the month with the highest UV index?

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

How high is the UV index in September?

In Arabi, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health risk 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
Arabi, LA

Average temperature in September - Arabi, LA
  • Average high temperature in September: 86.5°F

The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in September: 76.3°F

The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).

Average pressure in September
Arabi, LA

Average pressure in September - Arabi, 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).

Average wind speed in September
Arabi, LA

Average wind speed in September - Arabi, LA
  • Average wind speed in September: 7.1mph

The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in September
Arabi, LA

Average humidity in September - Arabi, LA
  • Average humidity in September: 73%

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Arabi, LA

Average rainfall in September - Arabi, LA
  • Average rainfall in September: 0.47"

The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").

Average rainfall days in September
Arabi, LA

Average rainfall days in September - Arabi, LA
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).

Average snowfall days in September
Arabi, LA

Average snowfall days in September - Arabi, 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).

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

Average daylight in September / Average sunshine in September - Arabi, 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: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in September
Arabi, LA

Average sunshine days in September - Arabi, LA
  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).

Average UV index in September
Arabi, LA

Average UV index in September - Arabi, 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 month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Arabi, LA

Average cloud cover in September - Arabi, LA
  • Average cloud cover in September: 25

The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).

Average visibility in September
Arabi, LA

Average visibility in September - Arabi, 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).

Arabi, Louisiana, USA

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