August weather forecast
Lebanon, TN

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Weather in August

Following the heatwave of July, Lebanon, Tennessee welcomes an August graced by a slight dip in average maximum temperature to 86.4°F (30.2°C). This month, acting as a transitional period, says goodbye to the peak summer heat and ushers in the coolness of the forthcoming autumn. Though August offers more rainfall as compared to July, it is just a gentle precursor to the wet days of September. However, the wind velocity remains constant, offering only a slight hint of the increased gust speeds that await in September. August, balancing the tail-end of summer and the advent of fall, hosts a bevy of weather elements, indicating the imminent arrival of autumn.

Temperature

August brings an average high-temperature of a still hot 86.4°F (30.2°C), nearly identical to the preceding month. Lebanon's nighttime temperature during August is consistently averaged at a comfortable 66.9°F (19.4°C).

Heat index

Throughout August, the heat index is computed to be a very hot 98.6°F (37°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In August, the average relative humidity in Lebanon, Tennessee, is 76%.

Rainfall

In Lebanon, in August, during 19.1 rainfall days, 3.9" (99mm) 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 August, the average length of the day in Lebanon is 13h and 29min.
On the first day of the month, sunrise is at 5:52 am and sunset at 7:50 pm. On the last day of August, sunrise is at 6:16 am and sunset at 7:13 pm CDT.

Sunshine

In Lebanon, the average sunshine in August is 10.4h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Shield from overexposure. Defense against sun-related harm is required. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Feb 14, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot is it in Lebanon in August?

An average high-temperature, in August, in Lebanon, is 86.4°F (30.2°C) and the average low-temperature is 66.9°F (19.4°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 98.6°F (37°C).

What is the average humidity in August in Lebanon?

In Lebanon, the average relative humidity in August is 76%.

How much does it rain in Lebanon in August?

In August, the rain falls for 19.1 days. Throughout August, 3.9" (99mm) of precipitation is accumulated.

When it does not snow in Lebanon?

May through October are months without snowfall.

What is the average length of the day in August in Lebanon?

The average day length in August is 13h and 29min.

When is the sunrise / sunset in August in Lebanon?

In August, on the first day of the month, sunrise is at 5:52 am and sunset at 7:50 pm. On the last day of the month, in Lebanon, Tennessee, sunrise is at 6:16 am and sunset at 7:13 pm CDT.

How long on average sun shines in August in Lebanon?

In August, the average sunshine duration in Lebanon, Tennessee, is 10.4h.

What are the months with the highest UV index in Lebanon?

The months with the highest UV index in Lebanon, Tennessee, are May through August, with an average maximum UV index of 6.

How high is the UV index in August in Lebanon?

In August, the average daily maximum UV index in Lebanon, Tennessee, is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Lebanon, TN

Average temperature in August - Lebanon, TN
  • Average high temperature in August: 86.4°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 August: 66.9°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°F).

Average pressure in August
Lebanon, TN

Average pressure in August - Lebanon, TN
  • Average pressure in August: 29.99"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 August
Lebanon, TN

Average wind speed in August - Lebanon, TN
  • Average wind speed in August: 4.4mph

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 August
Lebanon, TN

Average humidity in August - Lebanon, TN
  • Average humidity in August: 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 August
Lebanon, TN

Average rainfall in August - Lebanon, TN
  • Average rainfall in August: 3.9"

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 August
Lebanon, TN

Average rainfall days in August - Lebanon, TN
  • Average rainfall days in August: 19.1 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 August
Lebanon, TN

Average snowfall in August - Lebanon, TN
  • Average snowfall in August: 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 August
Lebanon, TN

Average snowfall days in August - Lebanon, TN
  • Average snowfall days in August: 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 August /
Average sunshine in August
Lebanon, TN

Average daylight in August / Average sunshine in August - Lebanon, TN
  • Average daylight in August: 13h and 3min

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 August: 10h and 2min

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 August
Lebanon, TN

Average sunshine days in August - Lebanon, TN
  • Average sunshine days in August: 10 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 August
Lebanon, TN

Average UV index in August - Lebanon, TN
  • Average UV index in August: 6

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 August
Lebanon, TN

Average cloud cover in August - Lebanon, TN
  • Average cloud cover in August: 30

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 August
Lebanon, TN

Average visibility in August - Lebanon, TN
  • Average visibility in August: 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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