August weather forecast
West Harpeth, TN

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Weather in August

August, the last month of the summer in West Harpeth, is another hot month, with an average temperature ranging between max 87.3°F (30.7°C) and min 68°F (20°C).

Temperature

With the advent of August, West Harpeth's high-temperatures adjust to a still hot 87.3°F (30.7°C), closely aligning with the preceding month. Throughout August, the average low-temperature records at a pleasant 68°F (20°C).

Heat index

In August, the average heat index is calculated to be a torrid 100.4°F (38°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
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. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In West Harpeth, the average relative humidity in August is 75%.

Rainfall

In West Harpeth, during August, the rain falls for 17.6 days and regularly aggregates up to 3.62" (92mm) of precipitation. In West Harpeth, during the entire year, the rain falls for 176.6 days and collects up to 38.94" (989mm) of precipitation.

Snowfall

In West Harpeth, Tennessee, snow does not fall in May through September.

Daylight

In August, the average length of the day is 13h and 28min.
On the first day of the month, sunrise is at 5:55 am and sunset at 7:51 pm. On the last day of August, sunrise is at 6:19 am and sunset at 7:16 pm CDT.

Sunshine

In August, the average sunshine is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 in August translates into these instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Jun 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August in West Harpeth?

During August, West Harpeth experiences an average high-temperature of 87.3°F (30.7°C) and a low-temperature of 68°F (20°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is calculated to be 100.4°F (38°C).

What is the average humidity in August?

The average relative humidity in August is 75%.

How many days does it rain in August?

In August, the rain falls for 17.6 days. Throughout August, 3.62" (92mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

How many hours of daylight does West Harpeth have in August?

The average day length in August is 13h and 28min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:55 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:16 pm CDT.

How long on average sun shines in August in West Harpeth?

The average sunshine duration in August in West Harpeth is 10.3h.

What are the months with the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average max. wind speed
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
West Harpeth, TN

Average temperature in August - West Harpeth, TN
  • Average high temperature in August: 87.3°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in August: 68°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).

Average pressure in August
West Harpeth, TN

Average pressure in August - West Harpeth, 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
West Harpeth, TN

Average wind speed in August - West Harpeth, TN
  • Average wind speed in August: 4.6mph

The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).

Average humidity in August
West Harpeth, TN

Average humidity in August - West Harpeth, TN
  • Average humidity in August: 75%

The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are October and November (74%).

Average rainfall in August
West Harpeth, TN

Average rainfall in August - West Harpeth, TN
  • Average rainfall in August: 3.62"

The wettest month (with the highest rainfall) is July (4.37").
The driest months (with the least rainfall) are September and November (2.36").

Average rainfall days in August
West Harpeth, TN

Average rainfall days in August - West Harpeth, TN
  • Average rainfall days in August: 17.6 days

The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is November (10 days).

Average snowfall in August
West Harpeth, TN

Average snowfall in August - West Harpeth, TN
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.22").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
West Harpeth, TN

Average snowfall days in August - West Harpeth, TN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.9 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
West Harpeth, TN

Average daylight in August / Average sunshine in August - West Harpeth, 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 48min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in August
West Harpeth, TN

Average sunshine days in August - West Harpeth, TN
  • Average sunshine days in August: 11.8 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (9.2 days).

Average UV index in August
West Harpeth, TN

Average UV index in August - West Harpeth, 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 and December (UV index 2).

Average cloud cover in August
West Harpeth, TN

Average cloud cover in August - West Harpeth, TN
  • Average cloud cover in August: 31

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
West Harpeth, TN

Average visibility in August - West Harpeth, 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).

West Harpeth, Tennessee, USA

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