August weather forecast
Castalian Springs, TN

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Weather in August

The last month of the summer, August, is also a moderately hot month in Castalian Springs, Tennessee, with an average temperature ranging between max 85.5°F (29.7°C) and min 66.7°F (19.3°C).

Temperature

A minimal variation is noted in Castalian Springs's average high-temperature at the onset of August, reaching a moderately hot 85.5°F (29.7°C) from July's 86.7°F (30.4°C). August is noted for a mean low-temperature of 66.7°F (19.3°C).

Heat index

The heat index for August is computed to be a torrid 96.8°F (36°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. 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. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In August, the average relative humidity in Castalian Springs is 77%.

Rainfall

In Castalian Springs, in August, it is raining for 18.4 days, with typically 4.45" (113mm) of accumulated precipitation. In Castalian Springs, during the entire year, the rain falls for 176.5 days and collects up to 41.22" (1047mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August in Castalian Springs is 13h and 30min.
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, in Castalian Springs, sunrise is at 6:16 am and sunset at 7:14 pm CDT.

Sunshine

The months with the most sunshine are June and August, with an average of 10.1h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during August translates into these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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 Castalian Springs in August?

In Castalian Springs, 85.5°F (29.7°C) is the average high-temperature and 66.7°F (19.3°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 96.8°F (36°C).

What is the average humidity in August in Castalian Springs?

The average relative humidity in August in Castalian Springs is 77%.

How many days does it rain in August in Castalian Springs?

In August, in Castalian Springs, Tennessee, the rain falls for 18.4 days. Throughout August, 4.45" (113mm) of precipitation is accumulated.

When it does not snow in Castalian Springs?

In Castalian Springs, snow does not fall in May through October.

What is the average length of the day in August in Castalian Springs?

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

When is the sunrise / sunset in August in Castalian Springs?

On the first day of August, sunrise is at 5:52 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:14 pm CDT.

What is the month with the most sunshine in Castalian Springs?

The months with the most sunshine in Castalian Springs, Tennessee, are June and August, with an average of 10.1h of sunshine.

How long on average sun shines in August in Castalian Springs?

In Castalian Springs, the average sunshine duration in August is 10.1h.

When is the highest UV index in Castalian Springs?

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

How high is the UV index in August in Castalian Springs?

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 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
Castalian Springs, TN

Average temperature in August - Castalian Springs, TN
  • Average high temperature in August: 85.5°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (42.8°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).

Average pressure in August
Castalian Springs, TN

Average pressure in August - Castalian Springs, 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 (29.96"Hg).

Average wind speed in August
Castalian Springs, TN

Average wind speed in August - Castalian Springs, TN
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

Average humidity in August
Castalian Springs, TN

Average humidity in August - Castalian Springs, TN
  • Average humidity in August: 77%

The months with the highest relative humidity are February, March, May, July and December (79%).
The month with the lowest relative humidity is October (75%).

Average rainfall in August
Castalian Springs, TN

Average rainfall in August - Castalian Springs, TN
  • Average rainfall in August: 4.45"

The wettest month (with the highest rainfall) is July (5.2").
The driest month (with the least rainfall) is November (2.28").

Average rainfall days in August
Castalian Springs, TN

Average rainfall days in August - Castalian Springs, TN
  • Average rainfall days in August: 18.4 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (10.3 days).

Average snowfall in August
Castalian Springs, TN

Average snowfall in August - Castalian Springs, TN
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Castalian Springs, TN

Average snowfall days in August - Castalian Springs, TN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (5.2 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
Castalian Springs, TN

Average daylight in August / Average sunshine in August - Castalian Springs, 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 1min

The months with the most sunshine are June and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days in August
Castalian Springs, TN

Average sunshine days in August - Castalian Springs, TN
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (9.8 days).

Average UV index in August
Castalian Springs, TN

Average UV index in August - Castalian Springs, 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
Castalian Springs, TN

Average cloud cover in August - Castalian Springs, TN
  • Average cloud cover in August: 32

The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 31).

Average visibility in August
Castalian Springs, TN

Average visibility in August - Castalian Springs, TN
  • Average visibility in August: 5mi

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

Castalian Springs, Tennessee, USA

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