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

Glenn Dale sees the arrival of August with an average high-temperature of a moderately hot 84.4°F (29.1°C), indicating a subtle variation from July. Throughout the month of August, Glenn Dale observes an average nighttime temperature of 68.7°F (20.4°C).

Heat index

Throughout August, the heat index is appraised at a hot 93.2°F (34°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical 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

The average relative humidity in August is 73%.

Rainfall

The month with the most rainfall is August, when the rain falls for 16.2 days and typically aggregates up to 3.62" (92mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August is 13h and 38min.
On the first day of August, 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

In August, the average sunshine 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 reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

How hot is it in August?

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

What is the average humidity in August?

The average relative humidity in August is 73%.

What is the wettest month?

The month with the most rainfall is August, when the rain falls for 16.2 days and typically aggregates up to 3.62" (92mm) of precipitation.

How much does it rain in Glenn Dale in August?

In Glenn Dale, in August, during 16.2 rainfall days, 3.62" (92mm) of precipitation is typically accumulated.

When it does not snow?

In Glenn Dale, 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 38min.

When is the sunrise / sunset in August?

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, in Glenn Dale, sunrise is at 6:35 am and sunset at 7:38 pm EDT.

How long on average sun shines in August?

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

What is the month 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 intensity in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's 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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Glenn Dale, Maryland, USA

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