August weather forecast
Fairfax Station, VA

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Weather in August

August, the last month of the summer in Fairfax Station, is another warm month, with an average temperature fluctuating between 85.6°F (29.8°C) and 66.9°F (19.4°C).

Temperature

Fairfax Station's shift into August is marked by a subtle change to a warm 85.6°F (29.8°C) from July's 87.8°F (31°C) in temperature. During August nights, Fairfax Station records an average temperature of 66.9°F (19.4°C).

Heat index

In August, the average heat index is evaluated at a torrid 95°F (35°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. 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. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

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

Rainfall

August is the month with the most rainfall. Rain falls for 17.4 days and accumulates 3.94" (100mm) of precipitation.

Snowfall

In Fairfax Station, snow does not fall in May through October.

Daylight

In Fairfax Station, the average length of the day in August is 13h and 38min.
On the first day of August in Fairfax Station, Virginia, 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 7:40 pm EDT.

Sunshine

In August, the average sunshine in Fairfax Station is 10.3h.

UV index

The months with the highest UV index in Fairfax Station are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

Is it hot in Fairfax Station during August?

The average high-temperature, in August, in Fairfax Station, is 85.6°F (29.8°C), while the average low-temperature is 66.9°F (19.4°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 95°F (35°C).

What is the average humidity in August in Fairfax Station?

The average relative humidity in August is 72%.

What is the wettest month in Fairfax Station?

August is the month with the most rainfall in Fairfax Station, Virginia. Rain falls for 17.4 days and accumulates 3.94" (100mm) of precipitation.

How many days does it rain in August in Fairfax Station?

In Fairfax Station, in August, it is raining for 17.4 days, with typically 3.94" (100mm) of accumulated precipitation.

When it does not snow in Fairfax Station?

In Fairfax Station, Virginia, snow does not fall in May through October.

How many hours of daylight does Fairfax Station have in August?

In August, the average day length in Fairfax Station is 13h and 38min.

What time are sunrise and sunset in August in Fairfax Station?

On the first day of August in Fairfax Station, 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 7:40 pm EDT.

How long on average sun shines in August in Fairfax Station?

The average sunshine duration in August in Fairfax Station, Virginia, is 10.3h.

What are the months with the highest UV index in Fairfax Station?

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

What is the UV index reading in August in Fairfax Station?

In Fairfax Station, Virginia, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from 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
Fairfax Station, VA

Average temperature in August - Fairfax Station, 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 (40.5°F).

  • Average low temperature in August: 66.9°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 (26.8°F).

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Average pressure in August
Fairfax Station, VA

Average pressure in August - Fairfax Station, 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
Fairfax Station, VA

Average wind speed in August - Fairfax Station, VA
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in August
Fairfax Station, VA

Average humidity in August - Fairfax Station, VA
  • Average humidity in August: 72%

The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in August
Fairfax Station, VA

Average rainfall in August - Fairfax Station, VA
  • Average rainfall in August: 3.94"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.09").

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Average rainfall days in August
Fairfax Station, VA

Average rainfall days in August - Fairfax Station, VA
  • Average rainfall days in August: 17.4 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in August
Fairfax Station, VA

Average snowfall in August - Fairfax Station, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Fairfax Station, VA

Average snowfall days in August - Fairfax Station, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (5.2 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
Fairfax Station, VA

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).

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Average sunshine days in August
Fairfax Station, VA

Average sunshine days in August - Fairfax Station, VA
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (19.3 days).
The months with the least sunshine days are May and July (10.5 days).

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Average UV index in August
Fairfax Station, VA

Average UV index in August - Fairfax Station, 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
Fairfax Station, VA

Average cloud cover in August - Fairfax Station, VA
  • Average cloud cover in August: 32

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in August
Fairfax Station, VA

Average visibility in August - Fairfax Station, 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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Fairfax Station, Virginia, USA

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