August weather forecast
Washington, PA

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Weather in August

August shares July's fervor but with a somewhat cooler ambience. Despite a slight decline in temperature levels, a maximum of 82°F (27.8°C) can still be reached, symbolizing the sun's persistent grip. Unlike the previous month, precipitation experiences a decrease to 1.26" (32mm), reinforcing the dominance of dry, hot weather. The ebbs and flows of the summer heat, intertwined with the lengthy sunny days, encapsulate the essence of an August in Washington. This month, while signaling the impending arrival of fall, withholds its stampede of warmth, ensuring the summer spirit resonates in every corner of the city.

Temperature

The beginning of August records an average high-temperature of a still moderately hot 82°F (27.8°C), almost echoing the conditions of the previous month. A considerable shift from the daytime highs is observed in Washington during August nights, with an average low of 59.9°F (15.5°C).

Heat index

August's heat index is calculated to be a hot 87.8°F (31°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.
Observations indicate that the heat index values are for shady locations 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 'felt air temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.

Humidity

April, July and August, with an average relative humidity of 77%, are the least humid months in Washington.

Rainfall

In Washington, during August, the rain falls for 14.8 days and regularly aggregates up to 1.26" (32mm) of precipitation. Throughout the year, there are 143 rainfall days, and 14.8" (376mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Washington.

Daylight

The average length of the day in August in Washington is 13h and 43min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:34 pm. On the last day of August, in Washington, Pennsylvania, sunrise is at 6:48 am and sunset at 7:53 pm EDT.

Sunshine

The month with the most sunshine in Washington is August, with an average of 10.2h of sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

What is the usual temperature for Washington in August?

Washington in August has an average high-temperature of 82°F (27.8°C) and an average low-temperature of 59.9°F (15.5°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 87.8°F (31°C).

What is the least humid month in Washington?

April, July and August, with an average relative humidity of 77%, are the least humid months.

What is the average humidity in August in Washington?

In August, the average relative humidity in Washington is 77%.

How many days does it rain in August in Washington?

In August, in Washington, Pennsylvania, the rain falls for 14.8 days. Throughout August, 1.26" (32mm) of precipitation is accumulated.

When it does not snow in Washington?

In Washington, Pennsylvania, snow does not fall in June through September.

How many hours of daylight does Washington have in August?

In August, the average day length in Washington is 13h and 43min.

What time are sunrise and sunset in August in Washington?

In August, on the first day of the month, sunrise is at 6:19 am and sunset at 8:34 pm. On the last day of the month, in Washington, Pennsylvania, sunrise is at 6:48 am and sunset at 7:53 pm EDT.

What month has the most sunshine in Washington?

August has the most sunshine of the year, with an average of 10.2h of sunshine.

How many hours of sunshine does Washington have in August?

In Washington, the average sunshine duration in August is 10.2h.

What are the months with the highest UV index in Washington?

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

What is the UV index intensity in August in Washington?

In Washington, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average max. wind speed
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
Washington, PA

Average temperature in August - Washington, PA
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in August: 59.9°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

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Average pressure in August
Washington, PA

Average pressure in August - Washington, PA
  • Average pressure in August: 30"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
Washington, PA

Average wind speed in August - Washington, PA
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in August
Washington, PA

Average humidity in August - Washington, PA
  • Average humidity in August: 77%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).

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Average rainfall in August
Washington, PA

Average rainfall in August - Washington, PA
  • Average rainfall in August: 1.26"

The wettest month (with the highest rainfall) is July (1.65").
The driest months (with the least rainfall) are January and November (0.94").

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Average rainfall days in August
Washington, PA

Average rainfall days in August - Washington, PA
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in August
Washington, PA

Average snowfall in August - Washington, PA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.26").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Washington, PA

Average snowfall days in August - Washington, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Washington, PA

Average daylight in August / Average sunshine in August - Washington, PA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in August
Washington, PA

Average sunshine days in August - Washington, PA
  • Average sunshine days in August: 13.9 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in August
Washington, PA

Average UV index in August - Washington, PA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Washington, PA

Average cloud cover in August - Washington, PA
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in August
Washington, PA

Average visibility in August - Washington, PA
  • 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).

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Washington, Pennsylvania, USA

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