September weather forecast
Highland Lakes, LA

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Weather in September

The first month of the autumn, September, is also a hot month in Highland Lakes, Louisiana, with an average temperature varying between 70.3°F (21.3°C) and 87.8°F (31°C).

Temperature

Highland Lakes's weather, upon September's arrival, documents an average high-temperature of a still hot 87.8°F (31°C), nearly identical to the prior month. During the month of September, the temperature in Highland Lakes generally drops to a low average of 70.3°F (21.3°C).

Heat index

September's mean heat index is evaluated at an extremely hot 105.8°F (41°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In September, the average relative humidity in Highland Lakes, Louisiana, is 79%.

Rainfall

In Highland Lakes, in September, it is raining for 18.6 days, with typically 3.27" (83mm) of accumulated precipitation. In Highland Lakes, during the entire year, the rain falls for 187.5 days and collects up to 40" (1016mm) of precipitation.

Snowfall

In Highland Lakes, snow does not fall in February through November.

Daylight

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

Sunshine

The average sunshine in September in Highland Lakes is 9.7h.

UV index

In Highland Lakes, 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 the ordinary person.
Note: The maximum UV index of 6 during September translates into these guidelines:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

How hot is September in Highland Lakes?

The high-temperature, in September, in Highland Lakes, is 87.8°F (31°C), while the low-temperature averages to 70.3°F (21.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 105.8°F (41°C).

What is the average humidity in September in Highland Lakes?

In September, the average relative humidity is 79%.

How much does it rain in Highland Lakes in September?

In September, in Highland Lakes, the rain falls for 18.6 days. Throughout September, 3.27" (83mm) of precipitation is accumulated.

When it does not snow in Highland Lakes?

February through November are months without snowfall.

What is the average length of the day in September in Highland Lakes?

In September, the average day length in Highland Lakes, Louisiana, is 12h and 20min.

When is the sunrise / sunset in September in Highland Lakes?

On the first day of September in Highland Lakes, Louisiana, 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 in Highland Lakes?

In Highland Lakes, Louisiana, the average sunshine duration in September is 9.7h.

What is the UV index intensity in September in Highland Lakes?

The average daily maximum UV index in September in Highland Lakes is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe 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
Highland Lakes, LA

Average temperature in September - Highland Lakes, LA
  • Average high temperature in September: 87.8°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in September: 70.3°F

The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).

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Average pressure in September
Highland Lakes, LA

Average pressure in September - Highland Lakes, 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).

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Average wind speed in September
Highland Lakes, LA

Average wind speed in September - Highland Lakes, LA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in September
Highland Lakes, LA

Average humidity in September - Highland Lakes, LA
  • Average humidity in September: 79%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
Highland Lakes, LA

Average rainfall in September - Highland Lakes, LA
  • Average rainfall in September: 3.27"

The wettest month (with the highest rainfall) is July (5.47").
The driest month (with the least rainfall) is November (1.93").

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Average rainfall days in September
Highland Lakes, LA

Average rainfall days in September - Highland Lakes, LA
  • Average rainfall days in September: 18.6 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (8.9 days).

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Average snowfall in September
Highland Lakes, LA

Average snowfall in September - Highland Lakes, 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
Highland Lakes, LA

Average snowfall days in September - Highland Lakes, 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
Highland Lakes, LA

Average daylight in September / Average sunshine in September - Highland Lakes, 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 4min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in September
Highland Lakes, LA

Average sunshine days in September - Highland Lakes, LA
  • Average sunshine days in September: 9.5 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (5.9 days).

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Average UV index in September
Highland Lakes, LA

Average UV index in September - Highland Lakes, 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
Highland Lakes, LA

Average cloud cover in September - Highland Lakes, LA
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).

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Average visibility in September
Highland Lakes, LA

Average visibility in September - Highland Lakes, LA
  • Average visibility in September: 5mi

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

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Highland Lakes, Louisiana, USA

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