September weather forecastShannon Hills, TN
September
Weather in September
The first month of the autumn, September, is still a warm month in Shannon Hills, Tennessee, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 60.6°F (15.9°C).Temperature
With the arrival of September, Shannon Hills experiences a modest decline in average high-temperatures, transitioning from a tropical 87.4°F (30.8°C) in August to a warm 81.5°F (27.5°C). An average low-temperature of 60.6°F (15.9°C) is common in Shannon Hills during the nights of September.Heat index
In September, the heat index is appraised at a tropical 86°F (30°C). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. 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 'feels like' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. 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.
Humidity
In Shannon Hills, the average relative humidity in September is 76%.Rainfall
The month with the least rainfall is September, when the rain falls for 7.5 days and typically collects 0.43" (11mm) of precipitation.Snowfall
April through November are months without snowfall in Shannon Hills.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 7:13 am and sunset at 8:07 pm. On the last day of September, in Shannon Hills, sunrise is at 7:35 am and sunset at 7:25 pm EDT.
Sunshine
The average sunshine in September in Shannon Hills is 8.5h.UV index
In Shannon Hills, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 5 in September leads to these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shannon Hills, TN
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in September: 60.6°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in September
Shannon Hills, TN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Shannon Hills, TN
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is February (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
Shannon Hills, TN
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, October and November (75%).
Average rainfall in September
Shannon Hills, TN
- Average rainfall in September: 0.43"
The wettest months (with the highest rainfall) are February and December (1.18").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in September
Shannon Hills, TN
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is July (11.7 days).
The month with the least rainy days is October (6.1 days).
Average snowfall in September
Shannon Hills, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Shannon Hills, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Shannon Hills, TN
- Average daylight in September: 12h and 24min
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 30min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Shannon Hills, TN
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is October (23.6 days).
The month with the least sunshine days is July (16.8 days).
Average UV index in September
Shannon Hills, 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 January, February and December (UV index 2).
Average cloud cover in September
Shannon Hills, TN
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Shannon Hills, TN
- Average visibility in September: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
