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
Vacherie experiences a minor change to a still hot 86.9°F (30.5°C) in average high-temperature during September, closely reflecting August. Throughout September, the temperature falls to an average low of 72°F (22.2°C).Heat index
September's mean heat index is calculated to be a torrid 102.2°F (39°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.Consider that heat index readings are for situations in the shade and light wind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
February, July through September and December, with an average relative humidity of 79%, are the most humid months in Vacherie, Louisiana.Rainfall
In Vacherie, in September, during 18.6 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Vacherie, during the entire year, the rain falls for 172.6 days and collects up to 30.2" (767mm) of precipitation.Snowfall
In Vacherie, snow does not fall in February through December.Daylight
In September, the average length of the day is 12h and 20min.On the first day of September, sunrise is at 6:40 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What are the most humid months?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Vacherie have in September?
What time are sunrise and sunset in September in Vacherie?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Vacherie, LA
- Average high temperature in September: 86.9°F
The warmest months (with the highest average high temperature) are July and August (89.8°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in September: 72°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in September
Vacherie, 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
Vacherie, LA
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Vacherie, LA
- Average humidity in September: 79%
The months with the highest relative humidity are February, July, August, September and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Vacherie, LA
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is July (4.88").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in September
Vacherie, LA
- Average rainfall days in September: 18.6 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Vacherie, 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
Vacherie, LA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.1 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
Vacherie, 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 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Vacherie, LA
- Average sunshine days in September: 8.8 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (6.4 days).
Average UV index in September
Vacherie, LA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Vacherie, LA
- Average cloud cover in September: 27
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in September
Vacherie, 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).
Vacherie, Louisiana, USA
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