August weather forecast
Glenn Dale, MD

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Weather in August

The last month of the summer, August, is another warm month in Glenn Dale, Maryland, with an average temperature ranging between max 84.4°F (29.1°C) and min 68.7°F (20.4°C).

Temperature

The advent of August sees the average high-temperature at a warm 84.4°F (29.1°C), subtly shifted from July's 86.4°F (30.2°C). Glenn Dale's average low-temperature is measured at a pleasant 68.7°F (20.4°C) during August.

Heat index

August's average heat index is evaluated at a tropical 93.2°F (34°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

In August, the average relative humidity is 73%.

Rainfall

August is the month with the most rainfall. Rain falls for 16.2 days and accumulates 3.62" (92mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day in Glenn Dale, Maryland, is 13h and 38min.
On the first day of August in Glenn Dale, sunrise is at 6:08 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:38 pm EDT.

Sunshine

The average sunshine in August in Glenn Dale is 10.3h.

UV index

The months with the highest UV index in Glenn Dale are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

How hot does it get in Glenn Dale in August?

The high-temperature during August is 84.4°F (29.1°C) and the low-temperature is 68.7°F (20.4°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in August is evaluated at 93.2°F (34°C).

What is the average humidity in August in Glenn Dale?

In Glenn Dale, the average relative humidity in August is 73%.

What is the rainiest month in Glenn Dale?

August is the month with the most rainfall. Rain falls for 16.2 days and accumulates 3.62" (92mm) of precipitation.

How much does it rain in Glenn Dale in August?

In Glenn Dale, Maryland, during August, the rain falls for 16.2 days and regularly aggregates up to 3.62" (92mm) of precipitation.

When it does not snow in Glenn Dale?

May through October are months without snowfall.

What is the average length of the day in August in Glenn Dale?

The average day length in August in Glenn Dale is 13h and 38min.

When are sunrise and sunset in August in Glenn Dale?

In August, on the first day of the month, sunrise is at 6:08 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:38 pm EDT.

How many hours of sunshine does Glenn Dale have in August?

The average sunshine duration in August is 10.3h.

When is the highest UV index in Glenn Dale?

The months with the highest UV index in Glenn Dale, Maryland, are May through August, with an average maximum UV index of 6.

How high is the UV index in August in Glenn Dale?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents 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
Glenn Dale, MD

Average temperature in August - Glenn Dale, MD
  • Average high temperature in August: 84.4°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in August: 68.7°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28°F).

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Average pressure in August
Glenn Dale, MD

Average pressure in August - Glenn Dale, MD
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in August
Glenn Dale, MD

Average wind speed in August - Glenn Dale, MD
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

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Average humidity in August
Glenn Dale, MD

Average humidity in August - Glenn Dale, MD
  • Average humidity in August: 73%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in August
Glenn Dale, MD

Average rainfall in August - Glenn Dale, MD
  • Average rainfall in August: 3.62"

The wettest month (with the highest rainfall) is August (3.62").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in August
Glenn Dale, MD

Average rainfall days in August - Glenn Dale, MD
  • Average rainfall days in August: 16.2 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.9 days).

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Average snowfall in August
Glenn Dale, MD

Average snowfall in August - Glenn Dale, MD
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.36").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Glenn Dale, MD

Average snowfall days in August - Glenn Dale, MD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.3 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
Glenn Dale, MD

Average daylight in August / Average sunshine in August - Glenn Dale, MD
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in August
Glenn Dale, MD

Average sunshine days in August - Glenn Dale, MD
  • Average sunshine days in August: 13 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in August
Glenn Dale, MD

Average UV index in August - Glenn Dale, MD
  • 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 and December (UV index 2).

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Average cloud cover in August
Glenn Dale, MD

Average cloud cover in August - Glenn Dale, MD
  • Average cloud cover in August: 31

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in August
Glenn Dale, MD

Average visibility in August - Glenn Dale, MD
  • 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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Glenn Dale, Maryland, USA

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