August weather forecast
New Johnsonville, TN

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Weather in August

The last month of the summer, August, is also a hot month in New Johnsonville, Tennessee, with an average temperature fluctuating between 88.3°F (31.3°C) and 67.6°F (19.8°C).

Temperature

New Johnsonville registers an average high-temperature of a still tropical 88.3°F (31.3°C) with the arrival of August, showing minor deviation from the preceding month. The low-temperature average for New Johnsonville during August stands at an enjoyable 67.6°F (19.8°C).

Heat index

For August, the heat index is computed to be an extremely hot 104°F (40°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', quantifies the warmth felt when relative humidity is considered. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, 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 quite important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. 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. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In August, the average relative humidity is 75%.

Rainfall

In New Johnsonville, in August, during 10.8 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In New Johnsonville, during the entire year, the rain falls for 115.4 days and collects up to 12.32" (313mm) of precipitation.

Snowfall

In New Johnsonville, Tennessee, snow does not fall in April through October.

Daylight

In August, the average length of the day is 13h and 29min.
On the first day of August in New Johnsonville, sunrise is at 5:59 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:20 pm CDT.

Sunshine

The average sunshine in August is 10h.

UV index

The months with the highest UV index are May 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: A maximum high UV index of 6 in August translates into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. 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

Is it hot in New Johnsonville during August?

During August, New Johnsonville experiences an average high-temperature of 88.3°F (31.3°C) and a low-temperature of 67.6°F (19.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 104°F (40°C).

What is the average humidity in August in New Johnsonville?

The average relative humidity in August in New Johnsonville, Tennessee, is 75%.

How many days does it rain in August in New Johnsonville?

In New Johnsonville, Tennessee, in August, during 10.8 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

When it does not snow in New Johnsonville?

In New Johnsonville, snow does not fall in April through October.

What is the average length of the day in August in New Johnsonville?

In New Johnsonville, the average day length in August is 13h and 29min.

When are sunrise and sunset in August in New Johnsonville?

In August, on the first day of the month, sunrise is at 5:59 am and sunset at 7:56 pm. On the last day of the month, in New Johnsonville, sunrise is at 6:23 am and sunset at 7:20 pm CDT.

How many hours of sunshine does New Johnsonville have in August?

The average sunshine duration in August in New Johnsonville is 10h.

What is the month with the highest UV index in New Johnsonville?

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

What is the UV index reading in August in New Johnsonville?

In August, the average daily maximum UV index in New Johnsonville is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
New Johnsonville, TN

Average temperature in August - New Johnsonville, TN
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (45°F).

  • Average low temperature in August: 67.6°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).

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Average pressure in August
New Johnsonville, TN

Average pressure in August - New Johnsonville, 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).

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Average wind speed in August
New Johnsonville, TN

Average wind speed in August - New Johnsonville, TN
  • Average wind speed in August: 4.8mph

The windiest months (with the highest average wind speed) are January, February and April (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in August
New Johnsonville, TN

Average humidity in August - New Johnsonville, TN
  • Average humidity in August: 75%

The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in August
New Johnsonville, TN

Average rainfall in August - New Johnsonville, TN
  • Average rainfall in August: 1.3"

The wettest month (with the highest rainfall) is July (1.5").
The driest month (with the least rainfall) is September (0.35").

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Average rainfall days in August
New Johnsonville, TN

Average rainfall days in August - New Johnsonville, TN
  • Average rainfall days in August: 10.8 days

The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is November (6.1 days).

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Average snowfall in August
New Johnsonville, TN

Average snowfall in August - New Johnsonville, TN
  • Average snowfall in August: 0"

The month with the highest snowfall is March (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
New Johnsonville, TN

Average snowfall days in August - New Johnsonville, TN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (1.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
New Johnsonville, TN

Average daylight in August / Average sunshine in August - New Johnsonville, 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 48min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in August
New Johnsonville, TN

Average sunshine days in August - New Johnsonville, TN
  • Average sunshine days in August: 18 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (15.7 days).

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Average UV index in August
New Johnsonville, TN

Average UV index in August - New Johnsonville, TN
  • Average UV index in August: 6

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

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Average cloud cover in August
New Johnsonville, TN

Average cloud cover in August - New Johnsonville, TN
  • Average cloud cover in August: 33

The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in August
New Johnsonville, TN

Average visibility in August - New Johnsonville, TN
  • Average visibility in August: 5mi

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

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New Johnsonville, Tennessee, USA

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