September weather forecast
Boutte, LA

Weather in September

September, the first month of the autumn in Boutte, is still a hot month, with temperature in the range of an average low of 74.1°F (23.4°C) and an average high of 86.5°F (30.3°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still tropical 86.5°F (30.3°C). The average low-temperature, in Boutte, is 74.1°F (23.4°C).

Heat index

In September, the average heat index is evaluated at a sweltering 98.6°F (37°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, clothing, metabolic differences). 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 particularly important for children. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In September, the average relative humidity in Boutte is 76%.

Rainfall

In Boutte, during September, the rain falls for 19.9 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, in Boutte, Louisiana, there are 180.8 rainfall days, and 33.39" (848mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall.

Daylight

The average length of the day in September in Boutte is 12h and 20min.
On the first day of the month, sunrise is at 6:38 am and sunset at 7:24 pm. On the last day of September, in Boutte, sunrise is at 6:54 am and sunset at 6:48 pm CDT.

Sunshine

The average sunshine in September is 10.2h.

UV index

In Boutte, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Boutte?

In Boutte, in September, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 74.1°F (23.4°C). in September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 98.6°F (37°C).

What is the average humidity in September in Boutte?

In September, the average relative humidity in Boutte, Louisiana, is 76%.

How many days does it rain in September in Boutte?

In Boutte, in September, during 19.9 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

When it does not snow in Boutte?

In Boutte, snow does not fall in February through November.

What is the average length of the day in September in Boutte?

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

What time are sunrise and sunset in September in Boutte?

In September, on the first day of the month, sunrise is at 6:38 am and sunset at 7:24 pm. On the last day of the month, in Boutte, Louisiana, sunrise is at 6:54 am and sunset at 6:48 pm CDT.

How many hours of sunshine does Boutte have in September?

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

What is the UV index intensity in September in Boutte?

The average daily maximum UV index in September in Boutte, Louisiana, is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.
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
Boutte, LA

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

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in September: 74.1°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (47.3°F).

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Average pressure in September
Boutte, LA

Average pressure in September - Boutte, 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
Boutte, LA

Average wind speed in September - Boutte, LA
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are February and April (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in September
Boutte, LA

Average humidity in September - Boutte, LA
  • Average humidity in September: 76%

The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Boutte, LA

Average rainfall in September - Boutte, LA
  • Average rainfall in September: 2.83"

The wettest month (with the highest rainfall) is July (5.39").
The driest month (with the least rainfall) is November (1.5").

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Average rainfall days in September
Boutte, LA

Average rainfall days in September - Boutte, LA
  • Average rainfall days in September: 19.9 days

The month with the highest number of rainy days is August (23.7 days).
The month with the least rainy days is November (8.4 days).

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Average snowfall days in September
Boutte, LA

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

The month with the highest number of snowfall days is January (0.2 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
Boutte, LA

Average daylight in September / Average sunshine in September - Boutte, 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 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in September
Boutte, LA

Average sunshine days in September - Boutte, LA
  • Average sunshine days in September: 7.9 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is August (4.8 days).

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Average UV index in September
Boutte, LA

Average UV index in September - Boutte, LA
  • Average UV index in September: 6

The months with the highest UV index are May, 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
Boutte, LA

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

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

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Average visibility in September
Boutte, LA

Average visibility in September - Boutte, 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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