August weather forecast
Castle Heights, VA

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Weather in August

The last month of the summer, August, is another hot month in Castle Heights, Virginia, with an average temperature fluctuating between 67.6°F (19.8°C) and 87.4°F (30.8°C).

Temperature

Castle Heights's shift into August is marked by a subtle change to a still hot 87.4°F (30.8°C) from July's 90°F (32.2°C) in temperature. Castle Heights's average low-temperature in August is measured at a comfortable 67.6°F (19.8°C).

Heat index

During August, the heat index is calculated to be a very hot 100.4°F (38°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. 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. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In August, the average relative humidity is 74%.

Rainfall

In Castle Heights, in August, during 15.4 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. In Castle Heights, during the entire year, the rain falls for 144.4 days and collects up to 21.3" (541mm) of precipitation.

Snowfall

In Castle Heights, snow does not fall in April through November.

Daylight

In Castle Heights, Virginia, the average length of the day in August is 13h and 31min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:19 pm. On the last day of August, in Castle Heights, Virginia, sunrise is at 6:44 am and sunset at 7:42 pm EDT.

Sunshine

The average sunshine in August in Castle Heights 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 value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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 Castle Heights in August?

Castle Heights in August has an average high-temperature of 87.4°F (30.8°C) and an average low-temperature of 67.6°F (19.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 100.4°F (38°C).

What is the average humidity in August in Castle Heights?

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

How many days does it rain in August in Castle Heights?

In Castle Heights, Virginia, during August, the rain falls for 15.4 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When it does not snow in Castle Heights?

In Castle Heights, snow does not fall in April through November.

What is the average length of the day in August in Castle Heights?

The average day length in August in Castle Heights is 13h and 31min.

When is the sunrise / sunset in August in Castle Heights?

On the first day of August in Castle Heights, Virginia, sunrise is at 6:19 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:42 pm EDT.

How long on average sun shines in August in Castle Heights?

The average sunshine duration in August in Castle Heights, Virginia, is 10.2h.

When is the highest UV index in Castle Heights?

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

How high is the UV index in August in Castle Heights?

The average daily maximum UV index in August in Castle Heights, Virginia, is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Castle Heights, VA

Average temperature in August - Castle Heights, VA
  • Average high temperature in August: 87.4°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in August: 67.6°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in August
Castle Heights, VA

Average pressure in August - Castle Heights, VA
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in August
Castle Heights, VA

Average wind speed in August - Castle Heights, VA
  • Average wind speed in August: 5mph

The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in August
Castle Heights, VA

Average humidity in August - Castle Heights, VA
  • Average humidity in August: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).

Average rainfall in August
Castle Heights, VA

Average rainfall in August - Castle Heights, VA
  • Average rainfall in August: 1.93"

The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in August
Castle Heights, VA

Average rainfall days in August - Castle Heights, VA
  • Average rainfall days in August: 15.4 days

The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is October (8.3 days).

Average snowfall in August
Castle Heights, VA

Average snowfall in August - Castle Heights, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in August
Castle Heights, VA

Average snowfall days in August - Castle Heights, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Castle Heights, VA

Average daylight in August / Average sunshine in August - Castle Heights, VA
  • 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 months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).

Average sunshine days in August
Castle Heights, VA

Average sunshine days in August - Castle Heights, VA
  • Average sunshine days in August: 13.4 days

The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is July (12 days).

Average UV index in August
Castle Heights, VA

Average UV index in August - Castle Heights, VA
  • 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 and December (UV index 2).

Average cloud cover in August
Castle Heights, VA

Average cloud cover in August - Castle Heights, VA
  • Average cloud cover in August: 35

The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in August
Castle Heights, VA

Average visibility in August - Castle Heights, VA
  • Average visibility in August: 6mi

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

Castle Heights, Virginia, USA

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