Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Gueydan marks the onset of September with an average high-temperature of a still hot 86.7°F (30.4°C), subtly divergent from August's 89.8°F (32.1°C). During September, an average low-temperature of 71.2°F (21.8°C) is observed.Heat index
The average heat index in September is estimated at a fiery hot 102.2°F (39°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. 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, in September, during 14.6 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, there are 144.3 rainfall days, and 22.17" (563mm) of precipitation is accumulated.Snowfall
In Gueydan, snow does not fall in February through December.Daylight
In Gueydan, the average length of the day in September 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
In September, the average sunshine 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 vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September in Gueydan?
When are sunrise and sunset in September?
How many hours of sunshine does Gueydan have in September?
What is the UV index reading in September?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
Gueydan, Louisiana, USA
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