August weather forecast
Darby, PA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Darby, Pennsylvania, with an average temperature varying between 83.7°F (28.7°C) and 67.6°F (19.8°C).

Temperature

The dawn of August sees an average high-temperature of a warm 83.7°F (28.7°C), subtly contrasting with July's 86°F (30°C). The average low-temperature of 67.6°F (19.8°C) is witnessed during August.

Heat index

For August, the heat index is evaluated at a hot 91.4°F (33°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Understand that the heat index values take into account shaded locations and mild winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in August is 73%.

Rainfall

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

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August in Darby, Pennsylvania, is 13h and 42min.
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.

Sunshine

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

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.

Frequently asked questions

How hot does it get in August?

The high-temperature, in August, in Darby, is 83.7°F (28.7°C), while the low-temperature averages to 67.6°F (19.8°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is evaluated at 91.4°F (33°C).

What is the average humidity in August?

The average relative humidity in August is 73%.

What is the wettest month?

August is the month with the most rainfall. Rain falls for 15.3 days and accumulates 2.95" (75mm) of precipitation.

How much does it rain in August?

In Darby, during August, the rain falls for 15.3 days and regularly aggregates up to 2.95" (75mm) of precipitation.

When it does not snow?

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

What is the average length of the day in August?

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

When is the sunrise / sunset in August?

In August, on the first day of the month, 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 August, the average sunshine duration is 10.3h.

What are the months with the highest UV index?

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

What is the UV index reading in August in Darby?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Darby, Pennsylvania, USA

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