September weather forecast
Palmetto, LA

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Weather in September

The first month of the autumn, September, is still a tropical month in Palmetto, Louisiana, with an average temperature varying between 69.1°F (20.6°C) and 87.3°F (30.7°C).

Temperature

The commencement of September records an average high-temperature of a still tropical 87.3°F (30.7°C), barely varying from August's 90.9°F (32.7°C). Palmetto's nighttime temperature during September is consistently averaged at a pleasant 69.1°F (20.6°C).

Heat index

September's mean heat index is evaluated at a blistering 104°F (40°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In Palmetto, the average relative humidity in September is 79%.

Rainfall

In Palmetto, in September, during 17.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, there are 182 rainfall days, and 39.09" (993mm) of precipitation is accumulated.

Snowfall

In Palmetto, snow does not fall in February through November.

Daylight

In September, the average length of the day in Palmetto is 12h and 20min.
On the first day of the month, sunrise is at 6:44 am and sunset at 7:30 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:53 pm CDT.

Sunshine

In September, the average sunshine is 9.5h.

UV index

The average daily maximum UV index in September in Palmetto is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

Is it hot in Palmetto during September?

An average high-temperature, in September, in Palmetto, is 87.3°F (30.7°C) and the average low-temperature is 69.1°F (20.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 104°F (40°C).

What is the average humidity in September in Palmetto?

In Palmetto, the average relative humidity in September is 79%.

How many days does it rain in September in Palmetto?

In September, in Palmetto, the rain falls for 17.3 days. Throughout September, 2.91" (74mm) of precipitation is accumulated.

When it does not snow in Palmetto?

February through November are months without snowfall.

How many hours of daylight does Palmetto have in September?

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

When is the sunrise / sunset in September in Palmetto?

In September, on the first day of the month, sunrise is at 6:44 am and sunset at 7:30 pm. On the last day of the month, in Palmetto, sunrise is at 7:01 am and sunset at 6:53 pm CDT.

How many hours of sunshine does Palmetto have in September?

The average sunshine duration in September in Palmetto, Louisiana, is 9.5h.

What is the UV index reading in September in Palmetto?

In September, the average daily maximum UV index in Palmetto is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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
Palmetto, LA

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

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (57.2°F).

  • Average low temperature in September: 69.1°F

The month with the highest average low temperature is August (73.4°F).
The coldest month (with the lowest average low temperature) is January (41.9°F).

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Average pressure in September
Palmetto, LA

Average pressure in September - Palmetto, 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
Palmetto, LA

Average wind speed in September - Palmetto, LA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).

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Average humidity in September
Palmetto, LA

Average humidity in September - Palmetto, LA
  • Average humidity in September: 79%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Palmetto, LA

Average rainfall in September - Palmetto, LA
  • Average rainfall in September: 2.91"

The wettest month (with the highest rainfall) is August (4.61").
The driest month (with the least rainfall) is November (2.2").

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Average rainfall days in September
Palmetto, LA

Average rainfall days in September - Palmetto, LA
  • Average rainfall days in September: 17.3 days

The month with the highest number of rainy days is August (22.5 days).
The month with the least rainy days is November (9.7 days).

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Average snowfall in September
Palmetto, LA

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

The month with the highest snowfall is January (0.24").
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
Palmetto, LA

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

The month with the highest number of snowfall days is January (0.4 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
Palmetto, LA

Average daylight in September / Average sunshine in September - Palmetto, 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 3min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

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Average sunshine days in September
Palmetto, LA

Average sunshine days in September - Palmetto, LA
  • Average sunshine days in September: 10.9 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is August (6.5 days).

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Average UV index in September
Palmetto, LA

Average UV index in September - Palmetto, 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
Palmetto, LA

Average cloud cover in September - Palmetto, LA
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 28).

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Average visibility in September
Palmetto, LA

Average visibility in September - Palmetto, 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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Palmetto, Louisiana, USA

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