September weather forecast
Gueydan, LA

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Weather in September

September, the first month of the autumn in Gueydan, is still a hot month, with temperature in the range of an average low of 71.2°F (21.8°C) and an average high of 86.7°F (30.4°C).

Temperature

The arrival of September sees a recorded average high-temperature of a still hot 86.7°F (30.4°C), showing little divergence from the previous month's conditions. Gueydan, during the nights of September, experiences an average temperature drop to an agreeable 71.2°F (21.8°C).

Heat index

The heat index in September is evaluated at a very hot 102.2°F (39°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in September is 79%.

Rainfall

In Gueydan, during September, the rain falls for 14.6 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Gueydan, during the entire year, the rain falls for 144.3 days and collects up to 22.17" (563mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 6:47 am and sunset at 7:32 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:56 pm CDT.

Sunshine

The average sunshine in September is 9.6h.

UV index

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 in September translates into these instructions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

How hot does it get in Gueydan in September?

In Gueydan, 86.7°F (30.4°C) is the average high-temperature and 71.2°F (21.8°C) is the average low-temperature during September. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 102.2°F (39°C).

What is the average humidity in September in Gueydan?

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

How many days does it rain in September in Gueydan?

In September, in Gueydan, Louisiana, the rain falls for 14.6 days. Throughout September, 1.73" (44mm) of precipitation is accumulated.

When it does not snow in Gueydan?

In Gueydan, snow does not fall in February through December.

How many hours of daylight does Gueydan have in September?

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

What time are sunrise and sunset in September in Gueydan?

On the first day of September, sunrise is at 6:47 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:56 pm CDT.

How long on average sun shines in September in Gueydan?

In Gueydan, Louisiana, the average sunshine duration in September is 9.6h.

What is the UV index reading in September in Gueydan?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents 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
Gueydan, LA

Average temperature in September - Gueydan, LA
  • Average high temperature in September: 86.7°F

The warmest month (with the highest average high temperature) is August (89.8°F).
The month with the lowest average high temperature is January (59.7°F).

  • Average low temperature in September: 71.2°F

The months with the highest average low temperature are July and August (75.6°F).
The coldest month (with the lowest average low temperature) is January (45°F).

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Average pressure in September
Gueydan, LA

Average pressure in September - Gueydan, LA
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).

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Average wind speed in September
Gueydan, LA

Average wind speed in September - Gueydan, LA
  • Average wind speed in September: 6.1mph

The windiest months (with the highest average wind speed) are February and April (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in September
Gueydan, LA

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

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Gueydan, LA

Average rainfall in September - Gueydan, LA
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is August (3.39").
The driest month (with the least rainfall) is March (1.18").

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Average rainfall days in September
Gueydan, LA

Average rainfall days in September - Gueydan, LA
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is November (8 days).

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Average snowfall in September
Gueydan, LA

Average snowfall in September - Gueydan, 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").

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Average snowfall days in September
Gueydan, LA

Average snowfall days in September - Gueydan, 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, November and December (0 days).

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

Average daylight in September / Average sunshine in September - Gueydan, 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: 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
Gueydan, LA

Average sunshine days in September - Gueydan, LA
  • Average sunshine days in September: 13.6 days

The months with the most sunshine days are January and November (20.6 days).
The months with the least sunshine days are July and August (10.8 days).

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Average UV index in September
Gueydan, LA

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

The months with the highest UV index are May, 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
Gueydan, LA

Average cloud cover in September - Gueydan, LA
  • Average cloud cover in September: 29

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 26).

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Average visibility in September
Gueydan, LA

Average visibility in September - Gueydan, 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).

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Gueydan, Louisiana, USA

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