August weather forecast
Darby, PA

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Weather in August

The last month of the summer, August, is another warm month in Darby, Pennsylvania, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 83.7°F (28.7°C).

Temperature

August registers an average high-temperature of a moderately hot 83.7°F (28.7°C), slightly varied from July's 86°F (30°C). Darby in August experiences a low-temperature average of 67.6°F (19.8°C).

Heat index

For most parts of August, the heat index is appraised at a tropical 91.4°F (33°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

In August, the average relative humidity is 73%.

Rainfall

The month with the most rainfall in Darby, Pennsylvania, is August, when the rain falls for 15.3 days and typically aggregates up to 2.95" (75mm) of precipitation.

Snowfall

In Darby, snow does not fall in May through October.

Daylight

The average length of the day in August in Darby is 13h and 42min.
On the first day of the month, sunrise is at 6:00 am and sunset at 8:14 pm. On the last day of August, in Darby, sunrise is at 6:28 am and sunset at 7:33 pm EDT.

Sunshine

In Darby, the average sunshine in August is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

How hot is August in Darby?

An average high-temperature, in August, in Darby, is 83.7°F (28.7°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 factors the actual air temperature with the relative humidity, in August is appraised at 91.4°F (33°C).

What is the average humidity in August in Darby?

In Darby, Pennsylvania, the average relative humidity in August is 73%.

What is the rainiest month in Darby?

The month with the most rainfall in Darby is August, when the rain falls for 15.3 days and typically aggregates up to 2.95" (75mm) of precipitation.

How many days does it rain in August in Darby?

In Darby, in August, during 15.3 rainfall days, 2.95" (75mm) of precipitation is typically accumulated.

When it does not snow in Darby?

May through October are months without snowfall in Darby, Pennsylvania.

How many hours of daylight does Darby have in August?

The average day length in August in Darby is 13h and 42min.

What time are sunrise and sunset in August in Darby?

On the first day of August, sunrise is at 6:00 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:33 pm EDT.

How long on average sun shines in August in Darby?

In Darby, Pennsylvania, the average sunshine duration in August is 10.3h.

When is the highest UV index in Darby?

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

How high is the UV index in August in Darby?

In Darby, Pennsylvania, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat from 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
Darby, PA

Average temperature in August - Darby, PA
  • Average high temperature in August: 83.7°F

The warmest month (with the highest average high temperature) is July (86°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 (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

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Average pressure in August
Darby, PA

Average pressure in August - Darby, 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
Darby, PA

Average wind speed in August - Darby, PA
  • Average wind speed in August: 5.5mph

The windiest months (with the highest average wind speed) are February, March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in August
Darby, PA

Average humidity in August - Darby, PA
  • Average humidity in August: 73%

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

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Average rainfall in August
Darby, PA

Average rainfall in August - Darby, PA
  • Average rainfall in August: 2.95"

The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in August
Darby, PA

Average rainfall days in August - Darby, PA
  • Average rainfall days in August: 15.3 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (6.6 days).

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Average snowfall in August
Darby, PA

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

The month with the highest snowfall is March (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Darby, PA

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

The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Darby, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in August
Darby, PA

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

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (12.1 days).

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Average UV index in August
Darby, PA

Average UV index in August - Darby, 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, November and December (UV index 2).

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Average cloud cover in August
Darby, PA

Average cloud cover in August - Darby, PA
  • Average cloud cover in August: 31

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in August
Darby, PA

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

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

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Darby, Pennsylvania, USA

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