August weather forecast
Forest Grove, TN

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Weather in August

August, the last month of the summer in Forest Grove, is another hot month, with temperature in the range of an average high of 86°F (30°C) and an average low of 67.1°F (19.5°C).

Temperature

The advent of August brings an average high-temperature of a still tropical 86°F (30°C), almost identical to the preceding month. Forest Grove, in August, witnesses an average low-temperature of 67.1°F (19.5°C).

Heat index

For most parts of August, the heat index is calculated to be a torrid 98.6°F (37°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

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

Rainfall

In Forest Grove, Tennessee, in August, it is raining for 17.8 days, with typically 3.58" (91mm) of accumulated precipitation. In Forest Grove, during the entire year, the rain falls for 174.6 days and collects up to 37.68" (957mm) of precipitation.

Snowfall

In Forest Grove, snow does not fall in May through October.

Daylight

In Forest Grove, the average length of the day in August is 13h and 30min.
On the first day of August in Forest Grove, Tennessee, sunrise is at 5:54 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:16 pm CDT.

Sunshine

In Forest Grove, the average sunshine in August is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

How hot is August in Forest Grove?

The high-temperature, in August, in Forest Grove, is 86°F (30°C), while the low-temperature averages to 67.1°F (19.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 98.6°F (37°C).

What is the average humidity in August in Forest Grove?

The average relative humidity in August in Forest Grove is 76%.

How many days does it rain in August in Forest Grove?

In Forest Grove, in August, during 17.8 rainfall days, 3.58" (91mm) of precipitation is typically accumulated.

When it does not snow in Forest Grove?

May through October are months without snowfall in Forest Grove, Tennessee.

What is the average length of the day in August in Forest Grove?

In Forest Grove, Tennessee, the average day length in August is 13h and 30min.

When are sunrise and sunset in August in Forest Grove?

In August, on the first day of the month, sunrise is at 5:54 am and sunset at 7:52 pm. On the last day of the month, in Forest Grove, Tennessee, sunrise is at 6:18 am and sunset at 7:16 pm CDT.

How many hours of sunshine does Forest Grove have in August?

The average sunshine duration in August in Forest Grove is 10.2h.

When is the highest UV index in Forest Grove?

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

What is the UV index intensity in August in Forest Grove?

In Forest Grove, Tennessee, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents 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
Forest Grove, TN

Average temperature in August - Forest Grove, TN
  • Average high temperature in August: 86°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (43°F).

  • Average low temperature in August: 67.1°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).

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Average pressure in August
Forest Grove, TN

Average pressure in August - Forest Grove, 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
Forest Grove, TN

Average wind speed in August - Forest Grove, TN
  • Average wind speed in August: 5mph

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in August
Forest Grove, TN

Average humidity in August - Forest Grove, TN
  • Average humidity in August: 76%

The months with the highest relative humidity are March, May and December (79%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in August
Forest Grove, TN

Average rainfall in August - Forest Grove, TN
  • Average rainfall in August: 3.58"

The wettest month (with the highest rainfall) is July (4.37").
The driest month (with the least rainfall) is September (2.24").

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Average rainfall days in August
Forest Grove, TN

Average rainfall days in August - Forest Grove, TN
  • Average rainfall days in August: 17.8 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (9.7 days).

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Average snowfall in August
Forest Grove, TN

Average snowfall in August - Forest Grove, TN
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.1").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Forest Grove, TN

Average snowfall days in August - Forest Grove, TN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Forest Grove, TN

Average daylight in August / Average sunshine in August - Forest Grove, 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 month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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Average sunshine days in August
Forest Grove, TN

Average sunshine days in August - Forest Grove, TN
  • Average sunshine days in August: 11.4 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.5 days).

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Average UV index in August
Forest Grove, TN

Average UV index in August - Forest Grove, 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).

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Average cloud cover in August
Forest Grove, TN

Average cloud cover in August - Forest Grove, TN
  • Average cloud cover in August: 31

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in August
Forest Grove, TN

Average visibility in August - Forest Grove, TN
  • Average visibility in August: 6mi

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

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Forest Grove, Tennessee, USA

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