August weather forecast
Cornwell, PA

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Weather in August

August, the last month of the summer in Cornwell, is also a moderately hot month, with an average temperature fluctuating between 84.2°F (29°C) and 67.6°F (19.8°C).

Temperature

The average high-temperature during August is a warm 84.2°F (29°C), almost matching the conditions of the preceding month. During the month of August, the temperature in Cornwell generally drops to a low average of 67.6°F (19.8°C).

Heat index

Throughout August, the heat index is evaluated at a tropical 91.4°F (33°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

April, July and August, with an average relative humidity of 71%, are the least humid months in Cornwell.

Rainfall

In August, the rain falls for 16 days. Throughout August, 3.35" (85mm) of precipitation is accumulated. In Cornwell, Pennsylvania, during the entire year, the rain falls for 153.8 days and collects up to 30.94" (786mm) of precipitation.

Snowfall

In Cornwell, snow does not fall in June through October.

Daylight

In August, the average length of the day is 13h and 43min.
On the first day of August in Cornwell, sunrise is at 5:58 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:32 pm EDT.

Sunshine

The average sunshine in August is 10.1h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 6 during August translates into the following guidance:
Stay clear of intense sun exposure. Solar protection is of utmost significance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

How hot is August in Cornwell?

In August, in Cornwell, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 67.6°F (19.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 91.4°F (33°C).

What are the least humid months in Cornwell?

April, July and August, with an average relative humidity of 71%, are the least humid months in Cornwell, Pennsylvania.

What is the average humidity in August in Cornwell?

In August, the average relative humidity in Cornwell is 71%.

How many days does it rain in August in Cornwell?

In Cornwell, during August, the rain falls for 16 days and regularly aggregates up to 3.35" (85mm) of precipitation.

When it does not snow in Cornwell?

June through October are months without snowfall in Cornwell.

How many hours of daylight does Cornwell have in August?

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

What time are sunrise and sunset in August in Cornwell?

On the first day of August in Cornwell, sunrise is at 5:58 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:32 pm EDT.

How many hours of sunshine does Cornwell have in August?

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

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

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

What is the UV index intensity in August in Cornwell?

In Cornwell, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high 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
Cornwell, PA

Average temperature in August - Cornwell, PA
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in August: 67.6°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in August
Cornwell, PA

Average pressure in August - Cornwell, 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 (29.93"Hg).

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Average wind speed in August
Cornwell, PA

Average wind speed in August - Cornwell, PA
  • Average wind speed in August: 5.6mph

The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in August
Cornwell, PA

Average humidity in August - Cornwell, PA
  • Average humidity in August: 71%

The months with the highest relative humidity are February and October (77%).
The months with the lowest relative humidity are April, July and August (71%).

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Average rainfall in August
Cornwell, PA

Average rainfall in August - Cornwell, PA
  • Average rainfall in August: 3.35"

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").

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Average rainfall days in August
Cornwell, PA

Average rainfall days in August - Cornwell, PA
  • Average rainfall days in August: 16 days

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall in August
Cornwell, PA

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

The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in August
Cornwell, PA

Average snowfall days in August - Cornwell, PA
  • 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 June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Cornwell, 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 July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in August
Cornwell, PA

Average sunshine days in August - Cornwell, PA
  • Average sunshine days in August: 13 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (10.4 days).

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Average UV index in August
Cornwell, PA

Average UV index in August - Cornwell, PA
  • 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, March, November and December (UV index 2).

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Average cloud cover in August
Cornwell, PA

Average cloud cover in August - Cornwell, PA
  • Average cloud cover in August: 34

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in August
Cornwell, PA

Average visibility in August - Cornwell, PA
  • Average visibility in August: 6mi

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

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Cornwell, Pennsylvania, USA

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