September weather forecast
Lake Charles, LA

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, the first month of the autumn in Lake Charles, is still a hot month, with an average temperature ranging between max 87.4°F (30.8°C) and min 71.2°F (21.8°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still tropical 87.4°F (30.8°C). The average low-temperature, in Lake Charles, is 71.2°F (21.8°C).

Heat index

The average heat index in September is computed to be a sweltering 102.2°F (39°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, clothing, wind), and activity. 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 especially crucial for babies and toddlers. 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

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

Rainfall

In Lake Charles, Louisiana, it is raining for 19.1 days, with typically 3.5" (89mm) of accumulated precipitation. 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

The average length of the day in September in Lake Charles is 12h and 20min.
On the first day of the month, sunrise is at 6:49 am and sunset at 7:36 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:59 pm CDT.

Sunshine

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

UV index

In Lake Charles, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Lake Charles?

The average high-temperature, in September, in Lake Charles, Louisiana, 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. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 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 much does it rain in Lake Charles in September?

In Lake Charles, in September, it is raining for 19.1 days, with typically 3.5" (89mm) of accumulated precipitation.

When it does not snow in Lake Charles?

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

What is the average length of the day in September in Lake Charles?

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

When are sunrise and sunset in September in Lake Charles?

In September, on the first day of the month, sunrise is at 6:49 am and sunset at 7:36 pm. On the last day of the month, in Lake Charles, sunrise is at 7:05 am and sunset at 6:59 pm CDT.

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

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

What is the UV index intensity in September in Lake Charles?

The average daily maximum UV index in September 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 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 20min

The month with the longest days is June (Average daylight: 14h and 4min).
The month with the shortest days is December (Average daylight: 10h and 14min).

  • Average sunshine in September: 9h and 48min

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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