August weather forecast
Walnut Hills, TN

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Weather in August

The last month of the summer, August, is another hot month in Walnut Hills, Tennessee, with an average temperature fluctuating between 68.4°F (20.2°C) and 87.4°F (30.8°C).

Temperature

The shift into August finds Walnut Hills at an average high-temperature of a still tropical 87.4°F (30.8°C), closely comparable to July's conditions. Nighttime temperatures hover around an average low of 68.4°F (20.2°C) in August.

Heat index

For August, the heat index is calculated to be a sweltering 100.4°F (38°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. 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.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The average relative humidity in August is 74%.

Rainfall

In Walnut Hills, in August, during 18.7 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. In Walnut Hills, during the entire year, the rain falls for 166.2 days and collects up to 33.86" (860mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 29min.
On the first day of August, sunrise is at 5:55 am and sunset at 7:52 pm. On the last day of the month, 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 estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

In Walnut Hills, 87.4°F (30.8°C) is the average high-temperature and 68.4°F (20.2°C) is the average low-temperature during August. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in August is calculated to be 100.4°F (38°C).

What is the average humidity in August?

In August, the average relative humidity is 74%.

How much does it rain in Walnut Hills in August?

In Walnut Hills, during August, the rain falls for 18.7 days and regularly aggregates up to 3.39" (86mm) of precipitation.

When it does not snow?

In Walnut Hills, snow does not fall in May through October.

How many hours of daylight does Walnut Hills have in August?

In August, the average day length is 13h and 29min.

When are sunrise and sunset in August in Walnut Hills?

On the first day of August, sunrise is at 5:55 am and sunset at 7:52 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?

The average sunshine duration in August 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 in Walnut Hills is 6. A UV Index of 6 to 7 symbolizes 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
Walnut Hills, TN

Average temperature in August - Walnut Hills, TN
  • Average high temperature in August: 87.4°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°F).

  • Average low temperature in August: 68.4°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in August
Walnut Hills, TN

Average pressure in August - Walnut Hills, 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
Walnut Hills, TN

Average wind speed in August - Walnut Hills, TN
  • Average wind speed in August: 4.6mph

The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in August
Walnut Hills, TN

Average humidity in August - Walnut Hills, TN
  • Average humidity in August: 74%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are June and October (73%).

Average rainfall in August
Walnut Hills, TN

Average rainfall in August - Walnut Hills, TN
  • Average rainfall in August: 3.39"

The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is November (1.81").

Average rainfall days in August
Walnut Hills, TN

Average rainfall days in August - Walnut Hills, TN
  • Average rainfall days in August: 18.7 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (9.3 days).

Average snowfall in August
Walnut Hills, TN

Average snowfall in August - Walnut Hills, TN
  • Average snowfall in August: 0"

The month with the highest snowfall is March (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Walnut Hills, TN

Average snowfall days in August - Walnut Hills, TN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.2 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
Walnut Hills, TN

Average daylight in August / Average sunshine in August - Walnut Hills, 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
Walnut Hills, TN

Average sunshine days in August - Walnut Hills, TN
  • Average sunshine days in August: 10.9 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.3 days).

Average UV index in August
Walnut Hills, TN

Average UV index in August - Walnut Hills, 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
Walnut Hills, TN

Average cloud cover in August - Walnut Hills, 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
Walnut Hills, TN

Average visibility in August - Walnut Hills, 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).

Walnut Hills, Tennessee, USA

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