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 Aetna, entering September brings a subtle temperature decrement, reducing from August's tropical 87.3°F (30.7°C) to a moderately hot 81.9°F (27.7°C). Aetna's temperature in September lowers to a consistent average of 61.9°F (16.6°C) during the nights.Heat index
In September, the heat index is computed to be a tropical 87.8°F (31°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Humidity
The average relative humidity in September is 76%.Rainfall
In Aetna, in September, during 13.7 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 170.2 rainfall days, and 39.33" (999mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:22 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:34 pm CDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Aetna, TN
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in September
Aetna, TN
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Aetna, TN
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Aetna, TN
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Aetna, TN
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is February (4.21").
The driest month (with the least rainfall) is November (2.48").
Average rainfall days in September
Aetna, TN
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Aetna, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Aetna, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Aetna, TN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 30min).
Average sunshine days in September
Aetna, TN
- Average sunshine days in September: 13.8 days
The months with the most sunshine days are October and November (18.9 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in September
Aetna, TN
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in September
Aetna, TN
- Average cloud cover in September: 34
The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Aetna, TN
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Aetna, Tennessee, USA
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