September weather forecast
Simmesport, LA

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Weather in September

September, the first month of the autumn in Simmesport, is still a hot month, with an average temperature fluctuating between 87.3°F (30.7°C) and 68.9°F (20.5°C).

Temperature

Simmesport observes a minor difference in average high-temperatures between August's 91°F (32.8°C) and September's 87.3°F (30.7°C). The low-temperature average for Simmesport during September stands at a pleasant 68.9°F (20.5°C).

Heat index

The heat index for September is calculated to be a torrid 102.2°F (39°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In Simmesport, the average relative humidity in September is 78%.

Rainfall

In Simmesport, during September, the rain falls for 16.2 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, in Simmesport, there are 174.9 rainfall days, and 38.82" (986mm) of precipitation is accumulated.

Snowfall

In Simmesport, snow does not fall in April through November.

Daylight

In Simmesport, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:43 am and sunset at 7:30 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:53 pm CDT.

Sunshine

In September, the average sunshine in Simmesport is 9.3h.

UV index

The average daily maximum UV index in September in Simmesport is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

How hot is it in Simmesport in September?

In Simmesport, in September, the average high-temperature is 87.3°F (30.7°C), and the average low-temperature is 68.9°F (20.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 102.2°F (39°C).

What is the average humidity in September in Simmesport?

In September, the average relative humidity in Simmesport is 78%.

How many days does it rain in September in Simmesport?

In Simmesport, Louisiana, during September, the rain falls for 16.2 days and regularly aggregates up to 2.8" (71mm) of precipitation.

When it does not snow in Simmesport?

In Simmesport, snow does not fall in April through November.

How many hours of daylight does Simmesport have in September?

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

What time are sunrise and sunset in September in Simmesport?

On the first day of September, sunrise is at 6:43 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:53 pm CDT.

How long on average sun shines in September in Simmesport?

The average sunshine duration in September in Simmesport is 9.3h.

What is the UV index reading in September in Simmesport?

In Simmesport, Louisiana, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
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
Simmesport, LA

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

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in September: 68.9°F

The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (41.7°F).

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Average pressure in September
Simmesport, LA

Average pressure in September - Simmesport, 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 (29.95"Hg).

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Average wind speed in September
Simmesport, LA

Average wind speed in September - Simmesport, LA
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest months (with the lowest average wind speed) are July and September (5.2mph).

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Average humidity in September
Simmesport, LA

Average humidity in September - Simmesport, LA
  • Average humidity in September: 78%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Simmesport, LA

Average rainfall in September - Simmesport, LA
  • Average rainfall in September: 2.8"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is November (2.24").

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Average rainfall days in September
Simmesport, LA

Average rainfall days in September - Simmesport, LA
  • Average rainfall days in September: 16.2 days

The month with the highest number of rainy days is August (20 days).
The month with the least rainy days is October (10 days).

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Average snowfall in September
Simmesport, LA

Average snowfall in September - Simmesport, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Simmesport, LA

Average snowfall days in September - Simmesport, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Simmesport, LA

Average daylight in September / Average sunshine in September - Simmesport, 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 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

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Average sunshine days in September
Simmesport, LA

Average sunshine days in September - Simmesport, LA
  • Average sunshine days in September: 12 days

The month with the most sunshine days is October (19.8 days).
The months with the least sunshine days are July and August (9.2 days).

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Average UV index in September
Simmesport, LA

Average UV index in September - Simmesport, LA
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in September
Simmesport, LA

Average cloud cover in September - Simmesport, LA
  • Average cloud cover in September: 34

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 30).

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Average visibility in September
Simmesport, LA

Average visibility in September - Simmesport, LA
  • Average visibility in September: 5mi

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

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Simmesport, Louisiana, USA

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