August weather forecast
Hearndale, TN

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Weather in August

The last month of the summer, August, is another tropical month in Hearndale, Tennessee, with an average temperature fluctuating between 67.6°F (19.8°C) and 87.4°F (30.8°C).

Temperature

The shift to August signals an average high-temperature of a still tropical 87.4°F (30.8°C), subtly varied from July's 88.5°F (31.4°C). Throughout August, Hearndale anticipates an average low-temperature of 67.6°F (19.8°C).

Heat index

In August, the average heat index is appraised at a very hot 102.2°F (39°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in August is 76%.

Rainfall

In Hearndale, in August, it is raining for 14.4 days, with typically 2.99" (76mm) of accumulated precipitation. Throughout the year, there are 165.6 rainfall days, and 37.64" (956mm) of precipitation is accumulated.

Snowfall

In Hearndale, Tennessee, snow does not fall in April through October.

Daylight

In August, the average length of the day in Hearndale is 13h and 30min.
On the first day of the month, sunrise is at 6:01 am and sunset at 7:59 pm. On the last day of August, in Hearndale, sunrise is at 6:25 am and sunset at 7:22 pm CDT.

Sunshine

In Hearndale, the average sunshine in August is 10.3h.

UV index

In August, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, an average UV index of 6 transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in Hearndale in August?

The average high-temperature, in August, in Hearndale, is 87.4°F (30.8°C), while the average low-temperature is 67.6°F (19.8°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is appraised at 102.2°F (39°C).

What is the average humidity in August in Hearndale?

The average relative humidity in August is 76%.

How many days does it rain in August in Hearndale?

In August, in Hearndale, Tennessee, the rain falls for 14.4 days. Throughout August, 2.99" (76mm) of precipitation is accumulated.

When it does not snow in Hearndale?

April through October are months without snowfall in Hearndale.

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

The average day length in August is 13h and 30min.

When are sunrise and sunset in August in Hearndale?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 7:59 pm. On the last day of the month, in Hearndale, sunrise is at 6:25 am and sunset at 7:22 pm CDT.

How long on average sun shines in August in Hearndale?

In August, the average sunshine duration is 10.3h.

What is the UV index intensity in August in Hearndale?

In August, the average daily maximum UV index in Hearndale, Tennessee, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
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
Hearndale, TN

Average temperature in August - Hearndale, TN
  • Average high temperature in August: 87.4°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (43.5°F).

  • Average low temperature in August: 67.6°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 (30.2°F).

Average pressure in August
Hearndale, TN

Average pressure in August - Hearndale, TN
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in August
Hearndale, TN

Average wind speed in August - Hearndale, TN
  • Average wind speed in August: 5.2mph

The windiest months (with the highest average wind speed) are January, February and April (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in August
Hearndale, TN

Average humidity in August - Hearndale, TN
  • Average humidity in August: 76%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Hearndale, TN

Average rainfall in August - Hearndale, TN
  • Average rainfall in August: 2.99"

The wettest month (with the highest rainfall) is February (4.17").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in August
Hearndale, TN

Average rainfall days in August - Hearndale, TN
  • Average rainfall days in August: 14.4 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (10.3 days).

Average snowfall in August
Hearndale, TN

Average snowfall in August - Hearndale, TN
  • Average snowfall in August: 0"

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

Average snowfall days in August
Hearndale, TN

Average snowfall days in August - Hearndale, TN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.1 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
Hearndale, TN

Average daylight in August / Average sunshine in August - Hearndale, 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 36min).

Average sunshine days in August
Hearndale, TN

Average sunshine days in August - Hearndale, TN
  • Average sunshine days in August: 14 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in August
Hearndale, TN

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

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in August
Hearndale, TN

Average cloud cover in August - Hearndale, TN
  • Average cloud cover in August: 29

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).

Average visibility in August
Hearndale, TN

Average visibility in August - Hearndale, 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).

Hearndale, Tennessee, USA

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