August weather forecast
Chartwood, MD

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Weather in August

August, the last month of the summer in Chartwood, is also a moderately hot month, with an average temperature ranging between max 83.7°F (28.7°C) and min 69.1°F (20.6°C).

Temperature

The advent of August reveals an average high-temperature of a still warm 83.7°F (28.7°C), showing minimal difference from the prior month. In August, the average low-temperature in Chartwood records at a pleasant 69.1°F (20.6°C) during the nights.

Heat index

The average heat index in August is computed to be a hot 91.4°F (33°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

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

Rainfall

The month with the most rainfall is August, when the rain falls for 13.9 days and typically aggregates up to 3.54" (90mm) of precipitation.

Snowfall

In Chartwood, snow does not fall in May through October.

Daylight

In Chartwood, the average length of the day in August is 13h and 39min.
On the first day of August in Chartwood, Maryland, sunrise is at 6:07 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:38 pm EDT.

Sunshine

In Chartwood, the average sunshine in August is 10.4h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

How hot is it in Chartwood in August?

In Chartwood, 83.7°F (28.7°C) is the average high-temperature and 69.1°F (20.6°C) is the average low-temperature during August. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in August is computed to be 91.4°F (33°C).

What is the average humidity in August in Chartwood?

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

What is the wettest month in Chartwood?

The month with the most rainfall in Chartwood, Maryland, is August, when the rain falls for 13.9 days and typically aggregates up to 3.54" (90mm) of precipitation.

How many days does it rain in August in Chartwood?

In Chartwood, in August, it is raining for 13.9 days, with typically 3.54" (90mm) of accumulated precipitation.

When it does not snow in Chartwood?

May through October are months without snowfall in Chartwood.

How many hours of daylight does Chartwood have in August?

In August, the average day length in Chartwood is 13h and 39min.

When are sunrise and sunset in August in Chartwood?

In August, on the first day of the month, sunrise is at 6:07 am and sunset at 8:17 pm. On the last day of the month, in Chartwood, Maryland, sunrise is at 6:34 am and sunset at 7:38 pm EDT.

How many hours of sunshine does Chartwood have in August?

The average sunshine duration in August is 10.4h.

What is the month with the highest UV index in Chartwood?

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

What is the UV index reading in August in Chartwood?

In August, the average daily maximum UV index in Chartwood, Maryland, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe 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
Chartwood, MD

Average temperature in August - Chartwood, MD
  • Average high temperature in August: 83.7°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 (39.6°F).

  • Average low temperature in August: 69.1°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in August
Chartwood, MD

Average pressure in August - Chartwood, 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
Chartwood, MD

Average wind speed in August - Chartwood, MD
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in August
Chartwood, MD

Average humidity in August - Chartwood, MD
  • Average humidity in August: 73%

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

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Average rainfall in August
Chartwood, MD

Average rainfall in August - Chartwood, MD
  • Average rainfall in August: 3.54"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in August
Chartwood, MD

Average rainfall days in August - Chartwood, MD
  • Average rainfall days in August: 13.9 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in August
Chartwood, MD

Average snowfall in August - Chartwood, MD
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Chartwood, MD

Average snowfall days in August - Chartwood, MD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.4 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
Chartwood, MD

Average daylight in August / Average sunshine in August - Chartwood, 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 6min).

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Average sunshine days in August
Chartwood, MD

Average sunshine days in August - Chartwood, MD
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in August
Chartwood, MD

Average UV index in August - Chartwood, 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, November and December (UV index 2).

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Average cloud cover in August
Chartwood, MD

Average cloud cover in August - Chartwood, MD
  • Average cloud cover in August: 30

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).

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Average visibility in August
Chartwood, MD

Average visibility in August - Chartwood, 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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Chartwood, Maryland, USA

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