August weather forecast
Greeneville, TN

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Weather in August

The last month of the summer, August, is also a moderately hot month in Greeneville, Tennessee, with an average temperature fluctuating between 83.8°F (28.8°C) and 61.2°F (16.2°C).

Temperature

Greeneville notes an average high-temperature of a still warm 83.8°F (28.8°C) in August, hardly diverging from July. Nightly average temperatures in August reveal a significant dip from daytime highs in Greeneville, registering a consistent an enjoyable 61.2°F (16.2°C).

Heat index

August's heat index is appraised at a hot 91.4°F (33°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

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

Rainfall

In August, in Greeneville, the rain falls for 17.4 days. Throughout August, 2.36" (60mm) of precipitation is accumulated. In Greeneville, Tennessee, during the entire year, the rain falls for 188.6 days and collects up to 32.87" (835mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 29min.
On the first day of August, sunrise is at 6:38 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 8:00 pm EDT.

Sunshine

In August, the average sunshine is 10.4h.

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 radiation for ordinary individuals.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

The high-temperature during August is 83.8°F (28.8°C) and the low-temperature is 61.2°F (16.2°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is appraised at 91.4°F (33°C).

What are the least humid months?

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

What is the average humidity in August?

In Greeneville, the average relative humidity in August is 74%.

How much does it rain in August?

In Greeneville, in August, during 17.4 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

When it does not snow in Greeneville?

May through September are months without snowfall.

How many hours of daylight does Greeneville have in August?

In Greeneville, Tennessee, the average day length in August is 13h and 29min.

When is the sunrise / sunset in August in Greeneville?

In August, on the first day of the month, sunrise is at 6:38 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 8:00 pm EDT.

How many hours of sunshine does Greeneville have in August?

The average sunshine duration in August in Greeneville is 10.4h.

When is the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August in Greeneville is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Greeneville, TN

Average temperature in August - Greeneville, TN
  • Average high temperature in August: 83.8°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (43.2°F).

  • Average low temperature in August: 61.2°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in August
Greeneville, TN

Average pressure in August - Greeneville, 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).

Average wind speed in August
Greeneville, TN

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

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

Average humidity in August
Greeneville, TN

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

The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are July and August (74%).

Average rainfall in August
Greeneville, TN

Average rainfall in August - Greeneville, TN
  • Average rainfall in August: 2.36"

The wettest month (with the highest rainfall) is February (3.39").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days in August
Greeneville, TN

Average rainfall days in August - Greeneville, TN
  • Average rainfall days in August: 17.4 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (11.4 days).

Average snowfall in August
Greeneville, TN

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

The month with the highest snowfall is December (4.09").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Greeneville, TN

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

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Greeneville, 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 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in August
Greeneville, TN

Average sunshine days in August - Greeneville, TN
  • Average sunshine days in August: 9.7 days

The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in August
Greeneville, TN

Average UV index in August - Greeneville, 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
Greeneville, TN

Average cloud cover in August - Greeneville, TN
  • Average cloud cover in August: 28

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in August
Greeneville, TN

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

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

Greeneville, Tennessee, USA

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