August weather forecast
Castle Shannon, PA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Castle Shannon, Pennsylvania, with an average temperature fluctuating between 82.2°F (27.9°C) and 61.2°F (16.2°C).

Temperature

Castle Shannon, Pennsylvania, notes an average high-temperature of a still moderately hot 82.2°F (27.9°C) in August, hardly diverging from July. Castle Shannon experiences a steady low-temperature of 61.2°F (16.2°C) throughout August.

Heat index

The heat index in August is evaluated at a hot 87.8°F (31°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

The least humid month is August, with an average relative humidity of 73%.

Rainfall

In Castle Shannon, in August, during 16.3 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. Throughout the year, in Castle Shannon, Pennsylvania, there are 164 rainfall days, and 26.89" (683mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In Castle Shannon, the average length of the day in August is 13h and 43min.
On the first day of the month, sunrise is at 6:18 am and sunset at 8:34 pm. On the last day of August, sunrise is at 6:47 am and sunset at 7:53 pm EDT.

Sunshine

The month with the most sunshine is August, with an average of 10.1h of sunshine.

UV index

In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: In August, the UV index of 5 transforms into the following advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What are August temperatures in Castle Shannon?

The high-temperature in Castle Shannon, Pennsylvania, during August is 82.2°F (27.9°C) and the low-temperature is 61.2°F (16.2°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 87.8°F (31°C).

What is the least humid month in Castle Shannon?

August is the least humid month in Castle Shannon, with an average relative humidity of 73%.

What is the average humidity in August in Castle Shannon?

In Castle Shannon, the average relative humidity in August is 73%.

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

In Castle Shannon, in August, it is raining for 16.3 days, with typically 1.97" (50mm) of accumulated precipitation.

When it does not snow in Castle Shannon?

In Castle Shannon, snow does not fall in May through September.

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

The average day length in August is 13h and 43min.

When are sunrise and sunset in August in Castle Shannon?

On the first day of August in Castle Shannon, Pennsylvania, sunrise is at 6:18 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:53 pm EDT.

What month has the most sunshine in Castle Shannon?

August has the most sunshine of the year in Castle Shannon, with an average of 10.1h of sunshine.

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

In August, the average sunshine duration in Castle Shannon is 10.1h.

What is the UV index reading in August in Castle Shannon?

The average daily maximum UV index in August in Castle Shannon is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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 Shannon, PA

Average temperature in August - Castle Shannon, PA
  • Average high temperature in August: 82.2°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in August: 61.2°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

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Average pressure in August
Castle Shannon, PA

Average pressure in August - Castle Shannon, PA
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in August
Castle Shannon, PA

Average wind speed in August - Castle Shannon, PA
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in August
Castle Shannon, PA

Average humidity in August - Castle Shannon, PA
  • Average humidity in August: 73%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (73%).

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Average rainfall in August
Castle Shannon, PA

Average rainfall in August - Castle Shannon, PA
  • Average rainfall in August: 1.97"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is November (1.61").

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Average rainfall days in August
Castle Shannon, PA

Average rainfall days in August - Castle Shannon, PA
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.5 days).

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Average snowfall in August
Castle Shannon, PA

Average snowfall in August - Castle Shannon, PA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Castle Shannon, PA

Average snowfall days in August - Castle Shannon, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Castle Shannon, PA

Average daylight in August / Average sunshine in August - Castle Shannon, 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 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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Average sunshine days in August
Castle Shannon, PA

Average sunshine days in August - Castle Shannon, PA
  • Average sunshine days in August: 13 days

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is February (9.5 days).

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Average UV index in August
Castle Shannon, PA

Average UV index in August - Castle Shannon, PA
  • Average UV index in August: 5

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

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Average cloud cover in August
Castle Shannon, PA

Average cloud cover in August - Castle Shannon, PA
  • Average cloud cover in August: 34

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in August
Castle Shannon, PA

Average visibility in August - Castle Shannon, PA
  • Average visibility in August: 6mi

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

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Castle Shannon, Pennsylvania, USA

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