September weather forecast
Saint Elmo, LA

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Weather in September

The first month of the autumn, September, is still a hot month in Saint Elmo, Louisiana, with an average temperature varying between 87.3°F (30.7°C) and 70.5°F (21.4°C).

Temperature

Saint Elmo's weather, upon September's arrival, documents an average high-temperature of a still hot 87.3°F (30.7°C), nearly identical to the prior month. Throughout September nights, Saint Elmo experiences a consistent temperature average of 70.5°F (21.4°C).

Heat index

September's heat index is calculated to be a blistering 104°F (40°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', arises from combining readings of air temperature and relative moisture content. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

February, September and December, with an average relative humidity of 80%, are the most humid months in Saint Elmo.

Rainfall

In Saint Elmo, in September, it is raining for 17.9 days, with typically 2.01" (51mm) of accumulated precipitation. In Saint Elmo, during the entire year, the rain falls for 165.4 days and collects up to 26.93" (684mm) of precipitation.

Snowfall

February through December are months without snowfall in Saint Elmo.

Daylight

In September, the average length of the day in Saint Elmo, Louisiana, 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 Saint Elmo, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

Sunshine

In September, the average sunshine is 9.7h.

UV index

In Saint Elmo, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 6 transforms into these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

Is it hot in Saint Elmo during September?

The average high-temperature, in September, in Saint Elmo, is 87.3°F (30.7°C), while the average low-temperature is 70.5°F (21.4°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 104°F (40°C).

What are the most humid months in Saint Elmo?

February, September and December, with an average relative humidity of 80%, are most humid months.

What is the average humidity in September in Saint Elmo?

In Saint Elmo, the average relative humidity in September is 80%.

How many days does it rain in September in Saint Elmo?

In September, the rain falls for 17.9 days. Throughout September, 2.01" (51mm) of precipitation is accumulated.

When it does not snow in Saint Elmo?

In Saint Elmo, Louisiana, snow does not fall in February through December.

How many hours of daylight does Saint Elmo have in September?

The average day length in September in Saint Elmo is 12h and 20min.

What time are sunrise and sunset in September in Saint Elmo?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, in Saint Elmo, Louisiana, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

How long on average sun shines in September in Saint Elmo?

In September, the average sunshine duration in Saint Elmo is 9.7h.

What is the UV index intensity in September in Saint Elmo?

In Saint Elmo, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Saint Elmo, LA

Average temperature in September - Saint Elmo, LA
  • Average high temperature in September: 87.3°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (60.1°F).

  • Average low temperature in September: 70.5°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in September
Saint Elmo, LA

Average pressure in September - Saint Elmo, 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
Saint Elmo, LA

Average wind speed in September - Saint Elmo, LA
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in September
Saint Elmo, LA

Average humidity in September - Saint Elmo, LA
  • Average humidity in September: 80%

The months with the highest relative humidity are February, September and December (80%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in September
Saint Elmo, LA

Average rainfall in September - Saint Elmo, LA
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is July (4.25").
The driest month (with the least rainfall) is November (1.18").

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Average rainfall days in September
Saint Elmo, LA

Average rainfall days in September - Saint Elmo, LA
  • Average rainfall days in September: 17.9 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.1 days).

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Average snowfall in September
Saint Elmo, LA

Average snowfall in September - Saint Elmo, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Saint Elmo, LA

Average snowfall days in September - Saint Elmo, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.2 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
Saint Elmo, LA

Average daylight in September / Average sunshine in September - Saint Elmo, 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
Saint Elmo, LA

Average sunshine days in September - Saint Elmo, LA
  • Average sunshine days in September: 9.9 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (7.3 days).

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Average UV index in September
Saint Elmo, LA

Average UV index in September - Saint Elmo, LA
  • Average UV index in September: 6

The months with the highest UV index are 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
Saint Elmo, LA

Average cloud cover in September - Saint Elmo, LA
  • Average cloud cover in September: 30

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
Saint Elmo, LA

Average visibility in September - Saint Elmo, LA
  • Average visibility in September: 5mi

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

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Saint Elmo, Louisiana, USA

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