August weather forecast
Swarthmore, PA

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Weather in August

The last month of the summer, August, is another warm month in Swarthmore, Pennsylvania, with an average temperature fluctuating between 83.5°F (28.6°C) and 67.3°F (19.6°C).

Temperature

At the onset of August, Swarthmore records an average high-temperature of a still moderately hot 83.5°F (28.6°C), showing little deviation from the preceding month. Throughout August, the temperature in Swarthmore, Pennsylvania, falls to an average low of 67.3°F (19.6°C).

Heat index

During August, the heat index is estimated at a tropical 89.6°F (32°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
Observations indicate that the heat index values are for shady locations with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.

Humidity

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

Rainfall

The month with the most rainfall in Swarthmore is August, when the rain falls for 16.1 days and typically aggregates up to 3.11" (79mm) of precipitation.

Snowfall

June through October are months without snowfall in Swarthmore.

Daylight

In Swarthmore, the average length of the day in August 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, sunrise is at 6:29 am and sunset at 7:33 pm EDT.

Sunshine

The average sunshine in August in Swarthmore is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Swarthmore. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: During August, 6 as the daily maximum UV index converts into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

How hot is it in Swarthmore in August?

The high-temperature in Swarthmore during August is 83.5°F (28.6°C) and the low-temperature is 67.3°F (19.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is estimated at 89.6°F (32°C).

What is the average humidity in August in Swarthmore?

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

What is the rainiest month in Swarthmore?

August is the month with the most rainfall in Swarthmore. Rain falls for 16.1 days and accumulates 3.11" (79mm) of precipitation.

How many days does it rain in August in Swarthmore?

In Swarthmore, Pennsylvania, in August, it is raining for 16.1 days, with typically 3.11" (79mm) of accumulated precipitation.

When it does not snow in Swarthmore?

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

How many hours of daylight does Swarthmore have in August?

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

What time are sunrise and sunset in August in Swarthmore?

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 6:29 am and sunset at 7:33 pm EDT.

How long on average sun shines in August in Swarthmore?

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

When is the highest UV index in Swarthmore?

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

How high is the UV index in August in Swarthmore?

The average daily maximum UV index in August in Swarthmore is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Swarthmore, PA

Average temperature in August - Swarthmore, PA
  • Average high temperature in August: 83.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in August: 67.3°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

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Average pressure in August
Swarthmore, PA

Average pressure in August - Swarthmore, 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
Swarthmore, PA

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

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in August
Swarthmore, PA

Average humidity in August - Swarthmore, 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
Swarthmore, PA

Average rainfall in August - Swarthmore, PA
  • Average rainfall in August: 3.11"

The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.61").

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Average rainfall days in August
Swarthmore, PA

Average rainfall days in August - Swarthmore, PA
  • Average rainfall days in August: 16.1 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in August
Swarthmore, PA

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

The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in August
Swarthmore, PA

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

The month with the highest number of snowfall days is February (3.8 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
Swarthmore, PA

Average daylight in August / Average sunshine in August - Swarthmore, 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
Swarthmore, PA

Average sunshine days in August - Swarthmore, PA
  • Average sunshine days in August: 12.5 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index in August
Swarthmore, PA

Average UV index in August - Swarthmore, 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
Swarthmore, PA

Average cloud cover in August - Swarthmore, PA
  • Average cloud cover in August: 32

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
Swarthmore, PA

Average visibility in August - Swarthmore, 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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Swarthmore, Pennsylvania, USA

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