September weather forecast
Boutte, LA

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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 high of 86.5°F (30.3°C) and an average low of 74.1°F (23.4°C).

Temperature

The introduction of September sees an average high-temperature of a still tropical 86.5°F (30.3°C), hardly deviating from August. September nights cool down to an average low-temperature of 74.1°F (23.4°C).

Heat index

September's average heat index is computed to be a very hot 98.6°F (37°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. 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. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

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

Rainfall

In Boutte, in September, it is raining for 19.9 days, with typically 2.83" (72mm) of accumulated precipitation. In Boutte, Louisiana, during the entire year, the rain falls for 180.8 days and collects up to 33.39" (848mm) of precipitation.

Snowfall

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

Daylight

In Boutte, the average length of the day in September is 12h and 20min.
On the first day of September in Boutte, sunrise is at 6:39 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:47 pm CDT.

Sunshine

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

UV index

The average daily maximum UV index in September in Boutte is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in September translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Frequently asked questions

How hot is September?

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. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 98.6°F (37°C).

What is the average humidity in September?

In September, the average relative humidity is 76%.

How much does it rain in Boutte in September?

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

When it does not snow?

February through November are months without snowfall.

How many hours of daylight does Boutte 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 6:39 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:47 pm CDT.

How many hours of sunshine does Boutte have in September?

In September, the average sunshine duration is 10.2h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents 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
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).

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).

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).

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%).

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").

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).

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).

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).

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).

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).

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).

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).

Boutte, Louisiana, USA

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