August weather forecast
Dayton, TN

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Weather in August

August, the last month of the summer in Dayton, is another tropical month, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 64.6°F (18.1°C).

Temperature

A minor adjustment in Dayton's average high-temperature is noted with the start of August, touching a still hot 86.5°F (30.3°C) from July's 87.4°F (30.8°C). Dayton documents a marked decrease from day to night, with an average low of 64.6°F (18.1°C) throughout August.

Heat index

During August, the heat index is appraised at a sweltering 98.6°F (37°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

January, June through November, with an average relative humidity of 76%, are the least humid months in Dayton.

Rainfall

In Dayton, in August, during 16.8 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. Throughout the year, in Dayton, there are 163.6 rainfall days, and 37.44" (951mm) of precipitation is accumulated.

Snowfall

In Dayton, snow does not fall in May through October.

Daylight

In Dayton, the average length of the day in August is 13h and 28min.
On the first day of August in Dayton, Tennessee, sunrise is at 6:49 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 8:08 pm EDT.

Sunshine

The average sunshine in August is 9.3h.

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 unsafe exposure to UV radiation for ordinary individuals.
Note: In August, the UV index of 6 transforms into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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 Dayton in August?

During August, Dayton experiences an average high-temperature of 86.5°F (30.3°C) and a low-temperature of 64.6°F (18.1°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 appraised at 98.6°F (37°C).

What are the least humid months in Dayton?

January, June through November, with an average relative humidity of 76%, are the least humid months.

What is the average humidity in August in Dayton?

In Dayton, the average relative humidity in August is 76%.

How much does it rain in Dayton in August?

In August, the rain falls for 16.8 days. Throughout August, 3.27" (83mm) of precipitation is accumulated.

When it does not snow in Dayton?

May through October are months without snowfall in Dayton, Tennessee.

How many hours of daylight does Dayton have in August?

In Dayton, Tennessee, the average day length in August is 13h and 28min.

When are sunrise and sunset in August in Dayton?

In August, on the first day of the month, sunrise is at 6:49 am and sunset at 8:43 pm. On the last day of the month, in Dayton, Tennessee, sunrise is at 7:12 am and sunset at 8:08 pm EDT.

How long on average sun shines in August in Dayton?

The average sunshine duration in August in Dayton, Tennessee, is 9.3h.

What is the month with the highest UV index in Dayton?

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

How high is the UV index in August in Dayton?

In August, the average daily maximum UV index in Dayton is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Dayton, TN

Average temperature in August - Dayton, TN
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in August: 64.6°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

Average pressure in August
Dayton, TN

Average pressure in August - Dayton, TN
  • Average pressure in August: 30"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
Dayton, TN

Average wind speed in August - Dayton, TN
  • Average wind speed in August: 4mph

The windiest months (with the highest average wind speed) are February and April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).

Average humidity in August
Dayton, TN

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

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are January, June, July, August, September, October and November (76%).

Average rainfall in August
Dayton, TN

Average rainfall in August - Dayton, TN
  • Average rainfall in August: 3.27"

The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is November (2.28").

Average rainfall days in August
Dayton, TN

Average rainfall days in August - Dayton, TN
  • Average rainfall days in August: 16.8 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in August
Dayton, TN

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

The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Dayton, TN

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

The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Dayton, TN

Average daylight in August / Average sunshine in August - Dayton, TN
  • Average daylight in August: 13h and 3min

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 2min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in August
Dayton, TN

Average sunshine days in August - Dayton, TN
  • Average sunshine days in August: 12.6 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in August
Dayton, TN

Average UV index in August - Dayton, 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
Dayton, TN

Average cloud cover in August - Dayton, TN
  • Average cloud cover in August: 34

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 32).

Average visibility in August
Dayton, TN

Average visibility in August - Dayton, TN
  • Average visibility in August: 5mi

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

Dayton, Tennessee, USA

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