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 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
The advent of September denotes an average high-temperature of a warm 84.9°F (29.4°C), subtly different from August's 89.2°F (31.8°C). Vienna reports an average low-temperature of 67.8°F (19.9°C) during the nights of September.Heat index
For most parts of September, the heat index is appraised at a hot 93.2°F (34°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
In Vienna, the average relative humidity in September is 74%.Rainfall
September is the month with the least rainfall. Rain falls for 9.9 days and accumulates 0.51" (13mm) of precipitation.Snowfall
February, April through December are months without snowfall in Vienna.Daylight
In Vienna, the average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:20 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 6 in September translates into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Vienna in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Vienna have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Vienna have in September?
What is the UV index reading in September?
Average temperature in September
Vienna, GA
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (56.3°F).
- Average low temperature in September: 67.8°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).
Average pressure in September
Vienna, GA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Vienna, GA
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Vienna, GA
- Average humidity in September: 74%
The months with the highest relative humidity are August and December (76%).
The months with the lowest relative humidity are January, October and November (70%).
Average rainfall in September
Vienna, GA
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is August (1.38").
The driest month (with the least rainfall) is September (0.51").
Average rainfall days in September
Vienna, GA
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is August (16.1 days).
The month with the least rainy days is November (6.1 days).
Average snowfall days in September
Vienna, GA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and March (0.1 days).
The months with the least snowfall days are February, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Vienna, GA
- 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: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Vienna, GA
- Average sunshine days in September: 17.6 days
The months with the most sunshine days are October and November (22.7 days).
The month with the least sunshine days is August (11.5 days).
Average UV index in September
Vienna, GA
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Vienna, GA
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 27).
Average visibility in September
Vienna, GA
- 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).
Vienna, Georgia, USA
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