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
The beginning of September in Lebanon subtly marks a decrease in the average high-temperature, transitioning from a tropical 86.4°F (30.2°C) in August to a moderately hot 81°F (27.2°C). In September, Lebanon encounters an average low-temperature of 61.5°F (16.4°C) during the night.Heat index
In September, the average heat index is appraised at a tropical 86°F (30°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular importance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
In Lebanon, the average relative humidity in September is 76%.Rainfall
In Lebanon, in September, during 14.5 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 182.4 rainfall days, and 39.8" (1011mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 6:17 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:29 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow in Lebanon?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Lebanon have in September?
How high is the UV index in September?
Average temperature in September
Lebanon, TN
- Average high temperature in September: 81°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (43.9°F).
- Average low temperature in September: 61.5°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°F).
Average pressure in September
Lebanon, 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 (29.97"Hg).
Average wind speed in September
Lebanon, TN
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).
Average humidity in September
Lebanon, TN
- Average humidity in September: 76%
The months with the highest relative humidity are March and December (79%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in September
Lebanon, TN
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is July (4.92").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in September
Lebanon, TN
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (11 days).
Average snowfall in September
Lebanon, TN
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Lebanon, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.4 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
Lebanon, TN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Lebanon, TN
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in September
Lebanon, 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
Lebanon, TN
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
Lebanon, TN
- 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).
Lebanon, Tennessee, USA
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