August weather forecast
Grassmere Park, PA

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Weather in August

The last month of the summer, August, is another warm month in Grassmere Park, Pennsylvania, with an average temperature fluctuating between 57.7°F (14.3°C) and 78.6°F (25.9°C).

Temperature

Grassmere Park notes an average high-temperature of a still moderately hot 78.6°F (25.9°C) in August, displaying minor variation from July. Grassmere Park's nights in August cool down to an average low-temperature of 57.7°F (14.3°C).

Humidity

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

Rainfall

In August, the rain falls for 15.1 days. Throughout August, 2.68" (68mm) of precipitation is accumulated. Throughout the year, there are 166.3 rainfall days, and 31.06" (789mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Grassmere Park.

Daylight

The average length of the day in August in Grassmere Park is 13h and 47min.
On the first day of the month, sunrise is at 6:01 am and sunset at 8:22 pm. On the last day of August, sunrise is at 6:31 am and sunset at 7:39 pm EDT.

Sunshine

In Grassmere Park, the average sunshine in August is 9.8h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 5 in August translates into these instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

During August, Grassmere Park experiences an average high-temperature of 78.6°F (25.9°C) and a low-temperature of 57.7°F (14.3°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 87.8°F (31°C).

What is the average humidity in August?

The average relative humidity in August in Grassmere Park is 80%.

How much does it rain in August?

In Grassmere Park, in August, during 15.1 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When it does not snow?

In Grassmere Park, snow does not fall in June through September.

How many hours of daylight does Grassmere Park have in August?

The average day length in August in Grassmere Park, Pennsylvania, is 13h and 47min.

When is the sunrise / sunset in August in Grassmere Park?

On the first day of August, sunrise is at 6:01 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:39 pm EDT.

How many hours of sunshine does Grassmere Park have in August?

In Grassmere Park, Pennsylvania, the average sunshine duration in August is 9.8h.

When is the highest UV index?

May through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the UV index intensity in August?

In Grassmere Park, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Grassmere Park, PA

Average temperature in August - Grassmere Park, PA
  • Average high temperature in August: 78.6°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in August: 57.7°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (19°F).

Average pressure in August
Grassmere Park, PA

Average pressure in August - Grassmere Park, 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).

Average wind speed in August
Grassmere Park, PA

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

The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in August
Grassmere Park, PA

Average humidity in August - Grassmere Park, PA
  • Average humidity in August: 80%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).

Average rainfall in August
Grassmere Park, PA

Average rainfall in August - Grassmere Park, PA
  • Average rainfall in August: 2.68"

The wettest months (with the highest rainfall) are April and May (2.99").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in August
Grassmere Park, PA

Average rainfall days in August - Grassmere Park, PA
  • Average rainfall days in August: 15.1 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in August
Grassmere Park, PA

Average snowfall in August - Grassmere Park, PA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (5.94").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Grassmere Park, PA

Average snowfall days in August - Grassmere Park, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Grassmere Park, PA

Average daylight in August / Average sunshine in August - Grassmere Park, PA
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

Average sunshine days in August
Grassmere Park, PA

Average sunshine days in August - Grassmere Park, PA
  • Average sunshine days in August: 13.6 days

The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is February (9.8 days).

Average UV index in August
Grassmere Park, PA

Average UV index in August - Grassmere Park, PA
  • Average UV index in August: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in August
Grassmere Park, PA

Average cloud cover in August - Grassmere Park, PA
  • Average cloud cover in August: 37

The months with the most cloud cover are February and December (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 35).

Average visibility in August
Grassmere Park, PA

Average visibility in August - Grassmere Park, PA
  • Average visibility in August: 5mi

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

Grassmere Park, Pennsylvania, USA

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