August weather forecast
Harrison, TN

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Weather in August

The last month of the summer, August, is another tropical month in Harrison, Tennessee, with an average temperature fluctuating between 66.2°F (19°C) and 87.8°F (31°C).

Temperature

August is marked by an average high-temperature of a still tropical 87.8°F (31°C), almost identical to the preceding month. Harrison's August nights bring a significant temperature shift, averaging at a comfortable 66.2°F (19°C).

Heat index

August's heat index is evaluated at a sweltering 102.2°F (39°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The months with the lowest humidity are June, August and October, with an average relative humidity of 74%.

Rainfall

In Harrison, during August, the rain falls for 15.7 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, there are 156.7 rainfall days, and 34.02" (864mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In Harrison, the average length of the day in August is 13h and 26min.
On the first day of the month, sunrise is at 6:50 am and sunset at 8:43 pm. On the last day of August, sunrise is at 7:12 am and sunset at 8:08 pm EDT.

Sunshine

In Harrison, the average sunshine in August is 9.5h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 6 in August transforms into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Harrison in August?

The high-temperature during August is 87.8°F (31°C) and the low-temperature is 66.2°F (19°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 102.2°F (39°C).

What is the least humid month in Harrison?

June, August and October, with an average relative humidity of 74%, are the least humid months.

What is the average humidity in August in Harrison?

In August, the average relative humidity is 74%.

How many days does it rain in August in Harrison?

In Harrison, Tennessee, in August, it is raining for 15.7 days, with typically 2.99" (76mm) of accumulated precipitation.

When it does not snow in Harrison?

In Harrison, Tennessee, snow does not fall in May through October.

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

In August, the average day length in Harrison is 13h and 26min.

When is the sunrise / sunset in August in Harrison?

In August, on the first day of the month, sunrise is at 6:50 am and sunset at 8:43 pm. On the last day of the month, in Harrison, sunrise is at 7:12 am and sunset at 8:08 pm EDT.

How many hours of sunshine does Harrison have in August?

In August, the average sunshine duration in Harrison, Tennessee, is 9.5h.

When is the highest UV index in Harrison?

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

What is the UV index intensity in August in Harrison?

In Harrison, Tennessee, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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
Harrison, TN

Average temperature in August - Harrison, TN
  • Average high temperature in August: 87.8°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (46.8°F).

  • Average low temperature in August: 66.2°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

Average pressure in August
Harrison, TN

Average pressure in August - Harrison, TN
  • Average pressure in August: 30.01"Hg

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in August
Harrison, TN

Average wind speed in August - Harrison, TN
  • Average wind speed in August: 3.9mph

The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity in August
Harrison, TN

Average humidity in August - Harrison, TN
  • Average humidity in August: 74%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, August and October (74%).

Average rainfall in August
Harrison, TN

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

The wettest month (with the highest rainfall) is February (3.62").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in August
Harrison, TN

Average rainfall days in August - Harrison, TN
  • Average rainfall days in August: 15.7 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in August
Harrison, TN

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

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

Average snowfall days in August
Harrison, TN

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

The month with the highest number of snowfall days is February (2.2 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
Harrison, TN

Average daylight in August / Average sunshine in August - Harrison, TN
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in August: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in August
Harrison, TN

Average sunshine days in August - Harrison, TN
  • Average sunshine days in August: 12.5 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in August
Harrison, TN

Average UV index in August - Harrison, 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
Harrison, TN

Average cloud cover in August - Harrison, TN
  • Average cloud cover in August: 31

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in August
Harrison, TN

Average visibility in August - Harrison, TN
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, May and December (5mi).

Harrison, Tennessee, USA

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