August weather forecast
Jonesborough, TN

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Weather in August

The last month of the summer, August, is also a moderately hot month in Jonesborough, Tennessee, with an average temperature fluctuating between 59.5°F (15.3°C) and 82.8°F (28.2°C).

Temperature

August's beginning signals an average high-temperature of a still warm 82.8°F (28.2°C), barely different from July's 83.3°F (28.5°C). Jonesborough's August nights see a large temperature deviation, with temperatures resting at a low of 59.5°F (15.3°C).

Heat index

For most parts of August, the heat index is calculated to be a hot 89.6°F (32°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. 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. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

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

Rainfall

In August, the rain falls for 15.9 days. Throughout August, 2.4" (61mm) of precipitation is accumulated. Throughout the year, in Jonesborough, Tennessee, there are 175.9 rainfall days, and 31.93" (811mm) of precipitation is accumulated.

Snowfall

In Jonesborough, snow does not fall in May through September.

Daylight

In August, the average length of the day is 13h and 30min.
On the first day of the month, sunrise is at 6:37 am and sunset at 8:35 pm. On the last day of August, in Jonesborough, sunrise is at 7:01 am and sunset at 7:58 pm EDT.

Sunshine

The average sunshine in August in Jonesborough is 10.4h.

UV index

The months with the highest UV index in Jonesborough are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 6 translates into these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

How hot is it in Jonesborough in August?

The high-temperature in Jonesborough, Tennessee, during August is 82.8°F (28.2°C) and the low-temperature is 59.5°F (15.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in August in Jonesborough?

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

How many days does it rain in August in Jonesborough?

In August, in Jonesborough, Tennessee, the rain falls for 15.9 days. Throughout August, 2.4" (61mm) of precipitation is accumulated.

When it does not snow in Jonesborough?

May through September are months without snowfall in Jonesborough.

How many hours of daylight does Jonesborough have in August?

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

What time are sunrise and sunset in August in Jonesborough?

On the first day of August in Jonesborough, sunrise is at 6:37 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 7:58 pm EDT.

How long on average sun shines in August in Jonesborough?

In August, the average sunshine duration is 10.4h.

When is the highest UV index in Jonesborough?

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

What is the UV index reading in August in Jonesborough?

In Jonesborough, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes 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
Jonesborough, TN

Average temperature in August - Jonesborough, TN
  • Average high temperature in August: 82.8°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (41.7°F).

  • Average low temperature in August: 59.5°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in August
Jonesborough, TN

Average pressure in August - Jonesborough, TN
  • Average pressure in August: 30.02"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in August
Jonesborough, TN

Average wind speed in August - Jonesborough, TN
  • Average wind speed in August: 3.7mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in August
Jonesborough, TN

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

The months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is November (75%).

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Average rainfall in August
Jonesborough, TN

Average rainfall in August - Jonesborough, TN
  • Average rainfall in August: 2.4"

The wettest month (with the highest rainfall) is February (3.39").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in August
Jonesborough, TN

Average rainfall days in August - Jonesborough, TN
  • Average rainfall days in August: 15.9 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.3 days).

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Average snowfall in August
Jonesborough, TN

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

The month with the highest snowfall is December (3.74").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Jonesborough, TN

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

The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Jonesborough, 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 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

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Average sunshine days in August
Jonesborough, TN

Average sunshine days in August - Jonesborough, TN
  • Average sunshine days in August: 11.7 days

The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is February (9.3 days).

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Average UV index in August
Jonesborough, TN

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in August
Jonesborough, TN

Average cloud cover in August - Jonesborough, TN
  • Average cloud cover in August: 30

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in August
Jonesborough, TN

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

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

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Jonesborough, Tennessee, USA

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