August weather forecast
Cornwall, PA

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Weather in August

August, the last month of the summer in Cornwall, is another warm month, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 79.9°F (26.6°C).

Temperature

With the start of August, Cornwall measures an average high-temperature of a still warm 79.9°F (26.6°C), not significantly differing from July's 82°F (27.8°C). Nighttime temperature in Cornwall experiences an average drop to a refreshing 61.7°F (16.5°C) in August.

Humidity

In Cornwall, the average relative humidity in August is 80%.

Rainfall

August is the month with the most rainfall in Cornwall. Rain falls for 14.7 days and accumulates 2.13" (54mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August in Cornwall is 13h and 43min.
On the first day of the month, sunrise is at 6:04 am and sunset at 8:19 pm. On the last day of August, in Cornwall, sunrise is at 6:32 am and sunset at 7:38 pm EDT.

Sunshine

The average sunshine in August is 9.8h.

UV index

In Cornwall, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, an average UV index of 5 transforms into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the usual temperature for Cornwall in August?

The average high-temperature, in August, in Cornwall, is 79.9°F (26.6°C), while the average low-temperature is 61.7°F (16.5°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in July is calculated to be 87.8°F (31°C).

What is the average humidity in August in Cornwall?

In Cornwall, Pennsylvania, the average relative humidity in August is 80%.

What is the wettest month in Cornwall?

August is the month with the most rainfall in Cornwall. Rain falls for 14.7 days and accumulates 2.13" (54mm) of precipitation.

How much does it rain in Cornwall in August?

In August, in Cornwall, the rain falls for 14.7 days. Throughout August, 2.13" (54mm) of precipitation is accumulated.

When it does not snow in Cornwall?

June through September are months without snowfall in Cornwall.

What is the average length of the day in August in Cornwall?

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

When is the sunrise / sunset in August in Cornwall?

On the first day of August in Cornwall, Pennsylvania, sunrise is at 6:04 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:38 pm EDT.

How long on average sun shines in August in Cornwall?

In August, the average sunshine duration is 9.8h.

How high is the UV index in August in Cornwall?

In Cornwall, Pennsylvania, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe 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
Cornwall, PA

Average temperature in August - Cornwall, PA
  • Average high temperature in August: 79.9°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in August: 61.7°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in August
Cornwall, PA

Average pressure in August - Cornwall, 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 (29.94"Hg).

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Average wind speed in August
Cornwall, PA

Average wind speed in August - Cornwall, PA
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in August
Cornwall, PA

Average humidity in August - Cornwall, PA
  • Average humidity in August: 80%

The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in August
Cornwall, PA

Average rainfall in August - Cornwall, PA
  • Average rainfall in August: 2.13"

The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is February (0.94").

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Average rainfall days in August
Cornwall, PA

Average rainfall days in August - Cornwall, PA
  • Average rainfall days in August: 14.7 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in August
Cornwall, PA

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

The month with the highest snowfall is January (1.97").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Cornwall, PA

Average snowfall days in August - Cornwall, 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 and September (0 days).

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

Average daylight in August / Average sunshine in August - Cornwall, 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: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in August
Cornwall, PA

Average sunshine days in August - Cornwall, PA
  • Average sunshine days in August: 13.4 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in August
Cornwall, PA

Average UV index in August - Cornwall, PA
  • Average UV index in August: 5

The months with the highest UV index are May, June and July (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
Cornwall, PA

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

The months with the most cloud cover are February and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in August
Cornwall, PA

Average visibility in August - Cornwall, PA
  • Average visibility in August: 5mi

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

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Cornwall, Pennsylvania, USA

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