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
In the transition from August to September, Deville reports an average high-temperature of a still hot 87.8°F (31°C), indicating a close resemblance to the prior month. In Deville, September is marked by an average low-temperature of 68°F (20°C).Heat index
For September, the heat index is evaluated at a blistering 104°F (40°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate 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. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
In Deville, the average relative humidity in September is 76%.Rainfall
In Deville, in September, it is raining for 14.9 days, with typically 2.01" (51mm) of accumulated precipitation. In Deville, Louisiana, during the entire year, the rain falls for 152.3 days and collects up to 23.66" (601mm) of precipitation.Snowfall
In Deville, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 21min.On the first day of September in Deville, sunrise is at 6:44 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:54 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Deville, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 6 in September transforms into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
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?
When is the sunrise / sunset in September?
How many hours of sunshine does Deville have in September?
What is the UV index intensity in September?
Average temperature in September
Deville, LA
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (56.1°F).
- Average low temperature in September: 68°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (40.5°F).
Average pressure in September
Deville, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).
Average wind speed in September
Deville, LA
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in September
Deville, LA
- Average humidity in September: 76%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Deville, LA
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days in September
Deville, LA
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in September
Deville, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Deville, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Deville, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Deville, LA
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is August (10.1 days).
Average UV index in September
Deville, LA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Deville, LA
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Deville, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, June, October, November and December (6mi).
The months with the lowest visibility are April, May, July, August and September (5mi).
Deville, Louisiana, USA
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