September weather forecast
Lower Texas, LA

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Weather in September

September, the first month of the autumn in Lower Texas, is also a hot month, with temperature in the range of an average low of 72.1°F (22.3°C) and an average high of 86.7°F (30.4°C).

Temperature

Lower Texas's weather in September indicates an average high-temperature of a still hot 86.7°F (30.4°C), nearly consistent with the 89.2°F (31.8°C) of August. Throughout September, the temperature in Lower Texas tends to fall to a consistent average low of 72.1°F (22.3°C).

Heat index

September's heat index is estimated at a very hot 102.2°F (39°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
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. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The months with the highest humidity in Lower Texas are July through September and December, with an average relative humidity of 79%.

Rainfall

In Lower Texas, Louisiana, during September, the rain falls for 19.1 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Lower Texas, during the entire year, the rain falls for 166.9 days and collects up to 25.39" (645mm) of precipitation.

Snowfall

February through November are months without snowfall.

Daylight

In Lower Texas, the average length of the day in September is 12h and 20min.
On the first day of September in Lower Texas, 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

In September, the average sunshine is 10.3h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

Is it hot in Lower Texas during September?

The average high-temperature, in September, in Lower Texas, is 86.7°F (30.4°C), while the average low-temperature is 72.1°F (22.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in September is estimated at 102.2°F (39°C).

What is the most humid month in Lower Texas?

The months with the highest humidity in Lower Texas, Louisiana, are July through September and December, with an average relative humidity of 79%.

What is the average humidity in September in Lower Texas?

The average relative humidity in September in Lower Texas is 79%.

How many days does it rain in September in Lower Texas?

In Lower Texas, Louisiana, in September, during 19.1 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow in Lower Texas?

In Lower Texas, snow does not fall in February through November.

How many hours of daylight does Lower Texas have in September?

The average day length in September in Lower Texas, Louisiana, is 12h and 20min.

When are sunrise and sunset in September in Lower Texas?

On the first day of September in Lower Texas, 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 many hours of sunshine does Lower Texas have in September?

In Lower Texas, Louisiana, the average sunshine duration in September is 10.3h.

When is the highest UV index in Lower Texas?

May through September, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in September in Lower Texas?

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

Average temperature in September - Lower Texas, LA
  • Average high temperature in September: 86.7°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (60.8°F).

  • Average low temperature in September: 72.1°F

The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (46.2°F).

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Average pressure in September
Lower Texas, LA

Average pressure in September - Lower Texas, LA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in September
Lower Texas, LA

Average wind speed in September - Lower Texas, LA
  • Average wind speed in September: 5.5mph

The windiest months (with the highest average wind speed) are February and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in September
Lower Texas, LA

Average humidity in September - Lower Texas, LA
  • Average humidity in September: 79%

The months with the highest relative humidity are July, August, September and December (79%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in September
Lower Texas, LA

Average rainfall in September - Lower Texas, LA
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is July (4.61").
The driest month (with the least rainfall) is November (1.14").

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Average rainfall days in September
Lower Texas, LA

Average rainfall days in September - Lower Texas, LA
  • Average rainfall days in September: 19.1 days

The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (7.2 days).

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Average snowfall days in September
Lower Texas, LA

Average snowfall days in September - Lower Texas, 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
Lower Texas, LA

Average daylight in September / Average sunshine in September - Lower Texas, 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 2min

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 12min).

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Average sunshine days in September
Lower Texas, LA

Average sunshine days in September - Lower Texas, LA
  • Average sunshine days in September: 8.2 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is August (5.8 days).

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Average UV index in September
Lower Texas, LA

Average UV index in September - Lower Texas, LA
  • Average UV index in September: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, November and December (UV index 4).

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Average cloud cover in September
Lower Texas, LA

Average cloud cover in September - Lower Texas, LA
  • Average cloud cover in September: 26

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 24).

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Average visibility in September
Lower Texas, LA

Average visibility in September - Lower Texas, 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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Lower Texas, Louisiana, USA

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