September weather forecast
Carville, LA

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Weather in September

September, the first month of the autumn in Carville, is still a tropical month, with temperature in the range of an average low of 70.5°F (21.4°C) and an average high of 87.3°F (30.7°C).

Temperature

Carville commences September with an average high-temperature of a still tropical 87.3°F (30.7°C), maintaining a close resemblance to the previous month. An average low-temperature of 70.5°F (21.4°C) is recorded during the nights in September.

Heat index

In September, the heat index is calculated to be a blisteringly hot 104°F (40°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. 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 of high significance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In September, the average relative humidity is 80%.

Rainfall

In September, the rain falls for 17 days. Throughout September, 1.26" (32mm) of precipitation is accumulated. In Carville, during the entire year, the rain falls for 154.1 days and collects up to 17.91" (455mm) of precipitation.

Snowfall

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

Daylight

In Carville, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

Sunshine

The average sunshine in September is 9.8h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

How hot does it get in September?

An average high-temperature, in September, in Carville, is 87.3°F (30.7°C) and the average low-temperature is 70.5°F (21.4°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 104°F (40°C).

What is the average humidity in September?

In Carville, the average relative humidity in September is 80%.

How many days does it rain in September?

In Carville, in September, during 17 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

When it does not snow?

February through December are months without snowfall.

How many hours of daylight does Carville have in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.8h.

What is the UV index reading in September?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average max. wind speed
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
Carville, LA

Average temperature in September - Carville, LA
  • Average high temperature in September: 87.3°F

The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is January (59.4°F).

  • Average low temperature in September: 70.5°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.1°F).

Average pressure in September
Carville, LA

Average pressure in September - Carville, 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 and August (29.96"Hg).

Average wind speed in September
Carville, LA

Average wind speed in September - Carville, LA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).

Average humidity in September
Carville, LA

Average humidity in September - Carville, LA
  • Average humidity in September: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September
Carville, LA

Average rainfall in September - Carville, LA
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is November (0.79").

Average rainfall days in September
Carville, LA

Average rainfall days in September - Carville, LA
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is August (20.8 days).
The month with the least rainy days is November (7.2 days).

Average snowfall in September
Carville, LA

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

The month with the highest snowfall is January (0.12").
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
Carville, LA

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

The month with the highest number of snowfall days is January (0.3 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
Carville, LA

Average daylight in September / Average sunshine in September - Carville, 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 5min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in September
Carville, LA

Average sunshine days in September - Carville, LA
  • Average sunshine days in September: 10.5 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (7.5 days).

Average UV index in September
Carville, LA

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

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Carville, LA

Average cloud cover in September - Carville, LA
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 26).

Average visibility in September
Carville, LA

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

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

Carville, Louisiana, USA

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