August weather forecast
Slippery Rock, PA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Slippery Rock, Pennsylvania, with an average temperature fluctuating between 58.3°F (14.6°C) and 79.7°F (26.5°C).

Temperature

The arrival of August sees an average high-temperature of a still warm 79.7°F (26.5°C), hardly diverging from July's 81.1°F (27.3°C). Throughout August, an average low-temperature of 58.3°F (14.6°C) is expected in Slippery Rock.

Humidity

April through August, with an average relative humidity of 79%, are the least humid months in Slippery Rock.

Rainfall

In August, in Slippery Rock, the rain falls for 17.3 days. Throughout August, 2.56" (65mm) of precipitation is accumulated. In Slippery Rock, during the entire year, the rain falls for 177.8 days and collects up to 36.65" (931mm) of precipitation.

Snowfall

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

Daylight

In Slippery Rock, the average length of the day in August is 13h and 46min.
On the first day of August in Slippery Rock, sunrise is at 6:16 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 7:54 pm EDT.

Sunshine

The months with the most sunshine in Slippery Rock are July and August, with an average of 9.7h of sunshine.

UV index

The months with the highest UV index in Slippery Rock are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in August interprets into the following advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What is the temperature in August in Slippery Rock?

The average high-temperature and low-temperature in Slippery Rock, Pennsylvania, during August are 79.7°F (26.5°C) and 58.3°F (14.6°C) respectively. The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in July is computed to be 86°F (30°C).

What are the least humid months in Slippery Rock?

April through August, with an average relative humidity of 79%, are the least humid months in Slippery Rock, Pennsylvania.

What is the average humidity in August in Slippery Rock?

In Slippery Rock, the average relative humidity in August is 79%.

How much does it rain in Slippery Rock in August?

In August, in Slippery Rock, the rain falls for 17.3 days. Throughout August, 2.56" (65mm) of precipitation is accumulated.

When it does not snow in Slippery Rock?

June through September are months without snowfall in Slippery Rock, Pennsylvania.

What is the average length of the day in August in Slippery Rock?

In Slippery Rock, Pennsylvania, the average day length in August is 13h and 46min.

When is the sunrise / sunset in August in Slippery Rock?

In August, on the first day of the month, sunrise is at 6:16 am and sunset at 8:36 pm. On the last day of the month, in Slippery Rock, Pennsylvania, sunrise is at 6:46 am and sunset at 7:54 pm EDT.

What are the months with the most sunshine in Slippery Rock?

The months with the most sunshine are July and August, with an average of 9.7h of sunshine.

How long on average sun shines in August in Slippery Rock?

In Slippery Rock, Pennsylvania, the average sunshine duration in August is 9.7h.

What is the month with the highest UV index in Slippery Rock?

The months with the highest UV index in Slippery Rock are May through August, with an average maximum UV index of 5.

What is the UV index reading in August in Slippery Rock?

The average daily maximum UV index in August in Slippery Rock, Pennsylvania, is 5. A UV Index reading of 3 to 5 represents a moderate 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
Slippery Rock, PA

Average temperature in August - Slippery Rock, PA
  • Average high temperature in August: 79.7°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in August: 58.3°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

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Average pressure in August
Slippery Rock, PA

Average pressure in August - Slippery Rock, PA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in August
Slippery Rock, PA

Average wind speed in August - Slippery Rock, PA
  • Average wind speed in August: 5.2mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in August
Slippery Rock, PA

Average humidity in August - Slippery Rock, PA
  • Average humidity in August: 79%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, May, June, July and August (79%).

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Average rainfall in August
Slippery Rock, PA

Average rainfall in August - Slippery Rock, PA
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is April (3.74").
The driest month (with the least rainfall) is November (2.36").

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Average rainfall days in August
Slippery Rock, PA

Average rainfall days in August - Slippery Rock, PA
  • Average rainfall days in August: 17.3 days

The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in August
Slippery Rock, PA

Average snowfall in August - Slippery Rock, PA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (8.54").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Slippery Rock, PA

Average snowfall days in August - Slippery Rock, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (19.1 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
Slippery Rock, PA

Average daylight in August / Average sunshine in August - Slippery Rock, PA
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 9h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in August
Slippery Rock, PA

Average sunshine days in August - Slippery Rock, PA
  • Average sunshine days in August: 11.5 days

The month with the most sunshine days is November (13.1 days).
The month with the least sunshine days is February (6.3 days).

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Average UV index in August
Slippery Rock, PA

Average UV index in August - Slippery Rock, PA
  • Average UV index in August: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Slippery Rock, PA

Average cloud cover in August - Slippery Rock, PA
  • Average cloud cover in August: 38

The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 38).

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Average visibility in August
Slippery Rock, PA

Average visibility in August - Slippery Rock, PA
  • Average visibility in August: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).

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Slippery Rock, Pennsylvania, USA

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