September weather forecast
Rocky Branch, LA

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Weather in September

September, the first month of the autumn in Rocky Branch, is also a hot month, with an average temperature ranging between max 87.8°F (31°C) and min 67.1°F (19.5°C).

Temperature

The transition to September results in a modest reduction in average high-temperature, moving from 93.7°F (34.3°C) in August to a still tropical 87.8°F (31°C). During the month of September, an average temperature of 67.1°F (19.5°C) is noted during the nights.

Heat index

The heat index in September is calculated to be a fiery hot 100.4°F (38°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. 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.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. 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 disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

The months with the lowest humidity in Rocky Branch are July through October, with an average relative humidity of 71%.

Rainfall

September is the month with the least rainfall in Rocky Branch, Louisiana. Rain falls for 12.8 days and accumulates 1.77" (45mm) of precipitation.

Snowfall

In Rocky Branch, snow does not fall in March through November.

Daylight

The average length of the day in September in Rocky Branch is 12h and 22min.
On the first day of the month, sunrise is at 6:44 am and sunset at 7:33 pm. On the last day of September, in Rocky Branch, Louisiana, sunrise is at 7:02 am and sunset at 6:54 pm CDT.

Sunshine

In Rocky Branch, the average sunshine in September is 9.7h.

UV index

In September, the average daily maximum UV index in Rocky Branch is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 6 suggests this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

How hot is it in Rocky Branch in September?

The average high-temperature, in September, in Rocky Branch, is 87.8°F (31°C), while the average low-temperature is 67.1°F (19.5°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 100.4°F (38°C).

What are the least humid months in Rocky Branch?

The months with the lowest humidity in Rocky Branch, Louisiana, are July through October, with an average relative humidity of 71%.

What is the average humidity in September in Rocky Branch?

The average relative humidity in September is 71%.

What is the driest month in Rocky Branch?

September is the month with the least rainfall in Rocky Branch. Rain falls for 12.8 days and accumulates 1.77" (45mm) of precipitation.

How much does it rain in Rocky Branch in September?

In September, in Rocky Branch, Louisiana, the rain falls for 12.8 days. Throughout September, 1.77" (45mm) of precipitation is accumulated.

When it does not snow in Rocky Branch?

March through November are months without snowfall.

What is the average length of the day in September in Rocky Branch?

In September, the average day length in Rocky Branch is 12h and 22min.

When are sunrise and sunset in September in Rocky Branch?

In September, on the first day of the month, sunrise is at 6:44 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:54 pm CDT.

How many hours of sunshine does Rocky Branch have in September?

In September, the average sunshine duration in Rocky Branch, Louisiana, is 9.7h.

What is the UV index intensity in September in Rocky Branch?

In Rocky Branch, Louisiana, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from 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
Rocky Branch, LA

Average temperature in September - Rocky Branch, LA
  • Average high temperature in September: 87.8°F

The warmest months (with the highest average high temperature) are July and August (93.7°F).
The month with the lowest average high temperature is January (53.2°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).

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Average pressure in September
Rocky Branch, LA

Average pressure in September - Rocky Branch, LA
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Rocky Branch, LA

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

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Rocky Branch, LA

Average humidity in September - Rocky Branch, LA
  • Average humidity in September: 71%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July, August, September and October (71%).

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Average rainfall in September
Rocky Branch, LA

Average rainfall in September - Rocky Branch, LA
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in September
Rocky Branch, LA

Average rainfall days in September - Rocky Branch, LA
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is August (15.1 days).
The month with the least rainy days is November (9.1 days).

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Average snowfall in September
Rocky Branch, LA

Average snowfall in September - Rocky Branch, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Rocky Branch, LA

Average snowfall days in September - Rocky Branch, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Rocky Branch, LA

Average daylight in September / Average sunshine in September - Rocky Branch, LA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 9h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

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Average sunshine days in September
Rocky Branch, LA

Average sunshine days in September - Rocky Branch, LA
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is February (13 days).

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Average UV index in September
Rocky Branch, LA

Average UV index in September - Rocky Branch, LA
  • Average UV index in September: 6

The months with the highest UV index are May, 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
Rocky Branch, LA

Average cloud cover in September - Rocky Branch, LA
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in September
Rocky Branch, LA

Average visibility in September - Rocky Branch, LA
  • Average visibility in September: 6mi

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

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Rocky Branch, Louisiana, USA

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