August weather forecast
Big Rock, VA

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Weather in August

August, the last month of the summer in Big Rock, is also a moderately hot month, with an average temperature varying between 61°F (16.1°C) and 85.3°F (29.6°C).

Temperature

Big Rock experiences an average high-temperature of a warm 85.3°F (29.6°C) in August, marking an insignificant shift from 86.7°F (30.4°C) in July. Big Rock demonstrates a significant disparity from daytime highs throughout the month of August, with an average nighttime temperature of 61°F (16.1°C).

Heat index

The heat index value for August is computed to be a torrid 95°F (35°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. 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. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

July, August and November, with an average relative humidity of 74%, are the least humid months in Big Rock.

Rainfall

In Big Rock, Virginia, in August, during 14.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Big Rock, during the entire year, the rain falls for 181.3 days and collects up to 34.02" (864mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 33min.
On the first day of August in Big Rock, Virginia, sunrise is at 6:33 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 7:58 pm EDT.

Sunshine

The month with the most sunshine in Big Rock is August, with an average of 10.3h of sunshine.

UV index

The months with the highest UV index in Big Rock are June and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 6 during August leads to these advisories:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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 Big Rock in August?

The high-temperature, in August, in Big Rock, is 85.3°F (29.6°C), while the low-temperature averages to 61°F (16.1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 95°F (35°C).

What is the least humid month in Big Rock?

July, August and November, with an average relative humidity of 74%, are the least humid months in Big Rock, Virginia.

What is the average humidity in August in Big Rock?

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

How much does it rain in Big Rock in August?

In August, in Big Rock, the rain falls for 14.8 days. Throughout August, 2.13" (54mm) of precipitation is accumulated.

When it does not snow in Big Rock?

May through September are months without snowfall in Big Rock.

How many hours of daylight does Big Rock have in August?

In Big Rock, Virginia, the average day length in August is 13h and 33min.

When is the sunrise / sunset in August in Big Rock?

In August, on the first day of the month, sunrise is at 6:33 am and sunset at 8:36 pm. On the last day of the month, in Big Rock, Virginia, sunrise is at 6:59 am and sunset at 7:58 pm EDT.

What month has the most sunshine in Big Rock?

The month with the most sunshine is August, with an average of 10.3h of sunshine.

How many hours of sunshine does Big Rock have in August?

In Big Rock, Virginia, the average sunshine duration in August is 10.3h.

What is the month with the highest UV index in Big Rock?

The months with the highest UV index in Big Rock, Virginia, are June and August, with an average maximum UV index of 6.

How high is the UV index in August in Big Rock?

The average daily maximum UV index in August in Big Rock, Virginia, is 6. A UV Index value of 6 to 7 symbolizes 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
Big Rock, VA

Average temperature in August - Big Rock, VA
  • Average high temperature in August: 85.3°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (41.2°F).

  • Average low temperature in August: 61°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in August
Big Rock, VA

Average pressure in August - Big Rock, VA
  • Average pressure in August: 30.02"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
Big Rock, VA

Average wind speed in August - Big Rock, VA
  • Average wind speed in August: 3.9mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity in August
Big Rock, VA

Average humidity in August - Big Rock, VA
  • Average humidity in August: 74%

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are July, August and November (74%).

Average rainfall in August
Big Rock, VA

Average rainfall in August - Big Rock, VA
  • Average rainfall in August: 2.13"

The wettest month (with the highest rainfall) is February (3.62").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in August
Big Rock, VA

Average rainfall days in August - Big Rock, VA
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is November (11.3 days).

Average snowfall in August
Big Rock, VA

Average snowfall in August - Big Rock, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Big Rock, VA

Average snowfall days in August - Big Rock, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Big Rock, VA

Average daylight in August / Average sunshine in August - Big Rock, VA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in August
Big Rock, VA

Average sunshine days in August - Big Rock, VA
  • Average sunshine days in August: 12.9 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (8.3 days).

Average UV index in August
Big Rock, VA

Average UV index in August - Big Rock, VA
  • Average UV index in August: 6

The months with the highest UV index are June 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
Big Rock, VA

Average cloud cover in August - Big Rock, VA
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in August
Big Rock, VA

Average visibility in August - Big Rock, VA
  • Average visibility in August: 5mi

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

Big Rock, Virginia, USA

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