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
September ushers in a minute temperature change, with average high-temperatures reducing from August's tropical 93.9°F (34.4°C) to a still hot 88.3°F (31.3°C). In Vienna, in September, the average low-temperature is a refreshing 67.1°F (19.5°C).Heat index
The heat index value for September is computed to be a torrid 102.2°F (39°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. 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. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
In Vienna, Louisiana, the average relative humidity in September is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 13.6 days and accumulates 1.89" (48mm) of precipitation.Snowfall
March through November are months without snowfall in Vienna, Louisiana.Daylight
The average length of the day in September in Vienna is 12h and 22min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:34 pm. On the last day of September, in Vienna, sunrise is at 7:04 am and sunset at 6:56 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In Vienna, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
How hot is it in Vienna in September?
What is the average humidity in September in Vienna?
What is the driest month in Vienna?
How much does it rain in Vienna in September?
When it does not snow in Vienna?
What is the average length of the day in September in Vienna?
What time are sunrise and sunset in September in Vienna?
How many hours of sunshine does Vienna have in September?
How high is the UV index in September in Vienna?
Average temperature in September
Vienna, LA
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is August (93.9°F).
The month with the lowest average high temperature is January (53.6°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in September
Vienna, LA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Vienna, LA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in September
Vienna, LA
- Average humidity in September: 72%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July, August and October (71%).
Average rainfall in September
Vienna, LA
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is February (4.06").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Vienna, LA
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in September
Vienna, LA
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Vienna, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 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
Vienna, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Vienna, LA
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (20 days).
The month with the least sunshine days is February (13.1 days).
Average UV index in September
Vienna, 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
Vienna, LA
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Vienna, LA
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May and December (5mi).
Vienna, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location
