September weather forecast
Lake Charles, LA

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A large ship has docked on the shores of the iconic Lake Charles in Louisiana
A large ship has docked on the shores of the iconic Lake Charles in Louisiana

Weather in September

September rings the bell for the onset of Fall in Lake Charles, Louisiana. The city witnesses a notable drop in temperature, inaugurating the beginning of cooler days. Registering a maximum temperature of 87.4°F (30.8°C), September initiates the decline of the summer heat. The steady decrease in temperatures announces the approach of autumn. October will witness further reductions in temperature, setting the stage for the full swing of autumn.

Temperature

Lake Charles marks the onset of September with an average high-temperature of a still tropical 87.4°F (30.8°C), subtly divergent from August's 91.4°F (33°C). Lake Charles, during the month of September, experiences an average low-temperature of 71.2°F (21.8°C).

Heat index

The heat index value during September is estimated at a fiery hot 102.2°F (39°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in September in Lake Charles is 77%.

Rainfall

In September, in Lake Charles, the rain falls for 19.1 days. Throughout September, 3.5" (89mm) of precipitation is accumulated. Throughout the year, there are 182.1 rainfall days, and 39.25" (997mm) of precipitation is accumulated.

Snowfall

In Lake Charles, snow does not fall in February through November.

Daylight

In Lake Charles, Louisiana, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:50 am and sunset at 7:35 pm. On the last day of September, in Lake Charles, sunrise is at 7:06 am and sunset at 6:59 pm CDT.

Sunshine

In September, the average sunshine is 9.8h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 6 suggests this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

Is it hot in Lake Charles during September?

The average high-temperature, in September, in Lake Charles, is 87.4°F (30.8°C), while the average low-temperature is 71.2°F (21.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in September is estimated at 102.2°F (39°C).

What is the average humidity in September in Lake Charles?

In Lake Charles, Louisiana, the average relative humidity in September is 77%.

How many days does it rain in September in Lake Charles?

In September, in Lake Charles, Louisiana, the rain falls for 19.1 days. Throughout September, 3.5" (89mm) of precipitation is accumulated.

When it does not snow in Lake Charles?

February through November are months without snowfall.

How many hours of daylight does Lake Charles have in September?

The average day length in September in Lake Charles, Louisiana, is 12h and 20min.

When is the sunrise / sunset in September in Lake Charles?

On the first day of September in Lake Charles, sunrise is at 6:50 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:59 pm CDT.

How long on average sun shines in September in Lake Charles?

In Lake Charles, the average sunshine duration in September is 9.8h.

How high is the UV index in September in Lake Charles?

In September, the average daily maximum UV index in Lake Charles, Louisiana, is 6. A UV Index value of 6 to 7 symbolizes 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
Lake Charles, LA

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

The warmest month (with the highest average high temperature) is August (91.4°F).
The month with the lowest average high temperature is January (59.4°F).

  • Average low temperature in September: 71.2°F

The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).

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Average pressure in September
Lake Charles, LA

Average pressure in September - Lake Charles, LA
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).

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Average wind speed in September
Lake Charles, LA

Average wind speed in September - Lake Charles, LA
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in September
Lake Charles, LA

Average humidity in September - Lake Charles, LA
  • Average humidity in September: 77%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Lake Charles, LA

Average rainfall in September - Lake Charles, LA
  • Average rainfall in September: 3.5"

The wettest month (with the highest rainfall) is August (5.75").
The driest month (with the least rainfall) is February (2.32").

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Average rainfall days in September
Lake Charles, LA

Average rainfall days in September - Lake Charles, LA
  • Average rainfall days in September: 19.1 days

The month with the highest number of rainy days is August (22.2 days).
The month with the least rainy days is November (10.1 days).

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Average snowfall in September
Lake Charles, LA

Average snowfall in September - Lake Charles, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.2").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Lake Charles, LA

Average snowfall days in September - Lake Charles, 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 and November (0 days).

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Average daylight in September /
Average sunshine in September
Lake Charles, LA

Average daylight in September / Average sunshine in September - Lake Charles, 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).

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Average sunshine days in September
Lake Charles, LA

Average sunshine days in September - Lake Charles, LA
  • Average sunshine days in September: 10.2 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is August (7.3 days).

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Average UV index in September
Lake Charles, LA

Average UV index in September - Lake Charles, 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
Lake Charles, LA

Average cloud cover in September - Lake Charles, LA
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 25).

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Average visibility in September
Lake Charles, LA

Average visibility in September - Lake Charles, 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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Lake Charles, Louisiana, USA

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