September weather forecast
Frellsen, LA

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Weather in September

September, the first month of the autumn in Frellsen, is also a hot month, with an average temperature varying between 86.5°F (30.3°C) and 75°F (23.9°C).

Temperature

September's commencement is accompanied by an average high-temperature of a still tropical 86.5°F (30.3°C), diverging marginally from August's 88.7°F (31.5°C). Frellsen experiences an average low-temperature reading of 75°F (23.9°C) throughout September.

Heat index

September's heat index is estimated at a very hot 98.6°F (37°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In Frellsen, the average relative humidity in September is 75%.

Rainfall

In Frellsen, in September, during 18.5 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. Throughout the year, there are 179.5 rainfall days, and 37.4" (950mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Frellsen.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 6:38 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:47 pm CDT.

Sunshine

In September, the average sunshine is 10.1h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. 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 optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

During September, Frellsen experiences an average high-temperature of 86.5°F (30.3°C) and a low-temperature of 75°F (23.9°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in September is estimated at 98.6°F (37°C).

What is the average humidity in September?

In September, the average relative humidity is 75%.

How many days does it rain in September?

In Frellsen, during September, the rain falls for 18.5 days and regularly aggregates up to 3.19" (81mm) of precipitation.

When it does not snow?

February through December are months without snowfall.

How many hours of daylight does Frellsen have in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:38 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:47 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 10.1h.

When is the highest UV index?

The months with the highest UV index are May through September, with an average maximum UV index of 7.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Frellsen, LA

Average temperature in September - Frellsen, LA
  • Average high temperature in September: 86.5°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (60.3°F).

  • Average low temperature in September: 75°F

The month with the highest average low temperature is August (77.9°F).
The coldest month (with the lowest average low temperature) is January (47.7°F).

Average pressure in September
Frellsen, LA

Average pressure in September - Frellsen, 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, August and September (29.97"Hg).

Average wind speed in September
Frellsen, LA

Average wind speed in September - Frellsen, LA
  • Average wind speed in September: 6.6mph

The windiest months (with the highest average wind speed) are February and April (9.2mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in September
Frellsen, LA

Average humidity in September - Frellsen, LA
  • Average humidity in September: 75%

The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Frellsen, LA

Average rainfall in September - Frellsen, LA
  • Average rainfall in September: 3.19"

The wettest month (with the highest rainfall) is July (5.94").
The driest month (with the least rainfall) is November (1.65").

Average rainfall days in September
Frellsen, LA

Average rainfall days in September - Frellsen, LA
  • Average rainfall days in September: 18.5 days

The month with the highest number of rainy days is August (24.2 days).
The month with the least rainy days is November (8.3 days).

Average snowfall in September
Frellsen, LA

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

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Frellsen, LA

Average snowfall days in September - Frellsen, 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).

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

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

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

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in September
Frellsen, LA

Average sunshine days in September - Frellsen, LA
  • Average sunshine days in September: 8.5 days

The month with the most sunshine days is November (20.5 days).
The months with the least sunshine days are July and August (5.3 days).

Average UV index in September
Frellsen, LA

Average UV index in September - Frellsen, LA
  • Average UV index in September: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, November and December (UV index 4).

Average cloud cover in September
Frellsen, LA

Average cloud cover in September - Frellsen, LA
  • Average cloud cover in September: 26

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 25).

Average visibility in September
Frellsen, LA

Average visibility in September - Frellsen, LA
  • Average visibility in September: 6mi

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

Frellsen, Louisiana, USA

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