August weather forecast
Sterling, VA

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Weather in August

August presents the continuation of the summer season in Sterling, Virginia. Temperatures exhibit a slight drop from July, signalling the impending arrival of the fall. The high temperatures combined with reasonable humidity can result in sporadic but usually short-lived downpours, bringing a necessary respite from the heat. Despite this, the city bustles with summer activities, exploiting the warmth and extended sunlight hours. The lush greenery and bright skies provide a vibrant backdrop, making it an ideal period for sightseeing and photography.

Temperature

Sterling's average high-temperature in August is a moderately hot 85.6°F (29.8°C), marking an insignificant difference from the 87.8°F (31°C) of July. Sterling in August experiences a low-temperature average of 66°F (18.9°C).

Heat index

The average heat index in August is calculated to be a torrid 95°F (35°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Sterling, Virginia, the average relative humidity in August is 72%.

Rainfall

August is the month with the most rainfall. Rain falls for 16.7 days and accumulates 3.78" (96mm) of precipitation.

Snowfall

In Sterling, snow does not fall in May through October.

Daylight

In August, the average length of the day is 13h and 39min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:20 pm. On the last day of August, sunrise is at 6:38 am and sunset at 7:41 pm EDT.

Sunshine

In August, the average sunshine in Sterling is 10h.

UV index

The months with the highest UV index in Sterling are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 6 during August translates into these guidelines:
Shun overexposure. Protection from sun ravages is indispensable. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

How hot is it in Sterling in August?

An average high-temperature, in August, in Sterling, is 85.6°F (29.8°C) and the average low-temperature is 66°F (18.9°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is calculated to be 95°F (35°C).

What is the average humidity in August in Sterling?

The average relative humidity in August in Sterling, Virginia, is 72%.

What is the wettest month in Sterling?

August is the month with the most rainfall. Rain falls for 16.7 days and accumulates 3.78" (96mm) of precipitation.

How many days does it rain in August in Sterling?

In Sterling, Virginia, in August, it is raining for 16.7 days, with typically 3.78" (96mm) of accumulated precipitation.

When it does not snow in Sterling?

In Sterling, snow does not fall in May through October.

How many hours of daylight does Sterling have in August?

The average day length in August is 13h and 39min.

When are sunrise and sunset in August in Sterling?

On the first day of August in Sterling, sunrise is at 6:11 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:41 pm EDT.

How long on average sun shines in August in Sterling?

The average sunshine duration in August in Sterling, Virginia, is 10h.

What is the month with the highest UV index in Sterling?

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

What is the UV index intensity in August in Sterling?

In August, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
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
Sterling, VA

Average temperature in August - Sterling, VA
  • Average high temperature in August: 85.6°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

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Average pressure in August
Sterling, VA

Average pressure in August - Sterling, VA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in August
Sterling, VA

Average wind speed in August - Sterling, VA
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in August
Sterling, VA

Average humidity in August - Sterling, VA
  • Average humidity in August: 72%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in August
Sterling, VA

Average rainfall in August - Sterling, VA
  • Average rainfall in August: 3.78"

The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in August
Sterling, VA

Average rainfall days in August - Sterling, VA
  • Average rainfall days in August: 16.7 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (9.3 days).

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Average snowfall in August
Sterling, VA

Average snowfall in August - Sterling, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Sterling, VA

Average snowfall days in August - Sterling, VA
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (5.1 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
Sterling, VA

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 0min).

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Average sunshine days in August
Sterling, VA

Average sunshine days in August - Sterling, VA
  • Average sunshine days in August: 12.1 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in August
Sterling, VA

Average UV index in August - Sterling, 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, February, November and December (UV index 2).

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Average cloud cover in August
Sterling, VA

Average cloud cover in August - Sterling, VA
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in August
Sterling, VA

Average visibility in August - Sterling, VA
  • 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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Sterling, Virginia, USA

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