August weather forecast
Glen Isle, MD

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Weather in August

The last month of the summer, August, is also a moderately hot month in Glen Isle, Maryland, with temperature in the range of an average low of 70.5°F (21.4°C) and an average high of 83.3°F (28.5°C).

Temperature

The arrival of August is marked by an average high-temperature of a still moderately hot 83.3°F (28.5°C), bearing a close resemblance to July. Glen Isle reports an average nighttime low-temperature of 70.5°F (21.4°C) in August.

Heat index

The heat index in August is computed to be a hot 89.6°F (32°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

In Glen Isle, Maryland, the average relative humidity in August is 74%.

Rainfall

The month with the most rainfall is August, when the rain falls for 14.3 days and typically aggregates up to 1.69" (43mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 38min.
On the first day of August, sunrise is at 6:07 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:37 pm EDT.

Sunshine

In August, the average sunshine is 10.5h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Glen Isle. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Fend off overexposure. Sun protection is vital. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

An average high-temperature, in August, in Glen Isle, is 83.3°F (28.5°C) and the average low-temperature is 70.5°F (21.4°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is computed to be 89.6°F (32°C).

What is the average humidity in August?

In Glen Isle, the average relative humidity in August is 74%.

What is the rainiest month?

August is the month with the most rainfall. Rain falls for 14.3 days and accumulates 1.69" (43mm) of precipitation.

How many days does it rain in August?

In Glen Isle, in August, during 14.3 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

When it does not snow?

In Glen Isle, snow does not fall in April through October.

What is the average length of the day in August?

In August, the average day length is 13h and 38min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:07 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:37 pm EDT.

How many hours of sunshine does Glen Isle have in August?

In Glen Isle, the average sunshine duration in August is 10.5h.

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.

How high is the UV index in August?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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
Glen Isle, MD

Average temperature in August - Glen Isle, MD
  • Average high temperature in August: 83.3°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in August: 70.5°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

Average pressure in August
Glen Isle, MD

Average pressure in August - Glen Isle, MD
  • Average pressure in August: 29.99"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
Glen Isle, MD

Average wind speed in August - Glen Isle, MD
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in August
Glen Isle, MD

Average humidity in August - Glen Isle, MD
  • Average humidity in August: 74%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

Average rainfall in August
Glen Isle, MD

Average rainfall in August - Glen Isle, MD
  • Average rainfall in August: 1.69"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in August
Glen Isle, MD

Average rainfall days in August - Glen Isle, MD
  • Average rainfall days in August: 14.3 days

The months with the highest number of rainy days are July and August (14.3 days).
The month with the least rainy days is November (5.3 days).

Average snowfall in August
Glen Isle, MD

Average snowfall in August - Glen Isle, MD
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Glen Isle, MD

Average snowfall days in August - Glen Isle, MD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.5 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
Glen Isle, MD

Average daylight in August / Average sunshine in August - Glen Isle, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in August
Glen Isle, MD

Average sunshine days in August - Glen Isle, MD
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is August (13.8 days).

Average UV index in August
Glen Isle, MD

Average UV index in August - Glen Isle, 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, February and December (UV index 2).

Average cloud cover in August
Glen Isle, MD

Average cloud cover in August - Glen Isle, MD
  • Average cloud cover in August: 29

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in August
Glen Isle, MD

Average visibility in August - Glen Isle, 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).

Glen Isle, Maryland, USA

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