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

The arrival of September brings an average high-temperature of a still hot 87.4°F (30.8°C), nearly identical to August's 91.4°F (33°C). In Lake Charles, in September, the average low-temperature is an agreeable 71.2°F (21.8°C).

Heat index

The heat index value during September is calculated to be a torrid 102.2°F (39°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

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

Rainfall

In September, 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

February through November are months without snowfall.

Daylight

In Lake Charles, 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, sunrise is at 7:06 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 of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

How hot does it get in September?

September temperatures vary between a high-temperature of 87.4°F (30.8°C) and a low-temperature of 71.2°F (21.8°C). 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, in September is calculated to be 102.2°F (39°C).

What is the average humidity in September in Lake Charles?

In September, the average relative humidity is 77%.

How much does it rain in September?

In Lake Charles, Louisiana, during September, the rain falls for 19.1 days and regularly aggregates up to 3.5" (89mm) of precipitation.

When it does not snow?

February through November are months without snowfall.

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

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 6:50 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 many hours of sunshine does Lake Charles have in September?

The average sunshine duration in September in Lake Charles is 9.8h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Lake Charles, Louisiana, USA

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