August weather forecast
Selby Grove, MD

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Weather in August

August, the last month of the summer in Selby Grove, is another warm month, with an average temperature ranging between min 69.1°F (20.6°C) and max 83.7°F (28.7°C).

Temperature

Selby Grove's average high-temperature in August is a still moderately hot 83.7°F (28.7°C), marking an insignificant difference from the 85.6°F (29.8°C) of July. During August nights, Selby Grove witnesses a consistent average temperature of 69.1°F (20.6°C).

Heat index

For August, the heat index is computed to be a tropical 91.4°F (33°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in August in Selby Grove is 73%.

Rainfall

August is the month with the most rainfall. Rain falls for 13.9 days and accumulates 3.54" (90mm) of precipitation.

Snowfall

In Selby Grove, snow does not fall in May through October.

Daylight

In Selby Grove, the average length of the day in August is 13h and 39min.
On the first day of the month, sunrise is at 6:07 am and sunset at 8:17 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:37 pm EDT.

Sunshine

In Selby Grove, the average sunshine in August is 10.4h.

UV index

The months with the highest UV index in Selby Grove are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

How hot is it in Selby Grove in August?

The high-temperature, in August, in Selby Grove, is 83.7°F (28.7°C), while the low-temperature averages to 69.1°F (20.6°C). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in August is computed to be 91.4°F (33°C).

What is the average humidity in August in Selby Grove?

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

What is the wettest month in Selby Grove?

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

How much does it rain in Selby Grove in August?

In August, in Selby Grove, the rain falls for 13.9 days. Throughout August, 3.54" (90mm) of precipitation is accumulated.

When it does not snow in Selby Grove?

May through October are months without snowfall.

How many hours of daylight does Selby Grove have in August?

In August, the average day length in Selby Grove, Maryland, is 13h and 39min.

When are sunrise and sunset in August in Selby Grove?

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 Selby Grove, sunrise is at 6:34 am and sunset at 7:37 pm EDT.

How many hours of sunshine does Selby Grove have in August?

In August, the average sunshine duration in Selby Grove, Maryland, is 10.4h.

When is the highest UV index in Selby Grove?

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

How high is the UV index in August in Selby Grove?

In Selby Grove, Maryland, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high 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
Selby Grove, MD

Average temperature in August - Selby Grove, 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
Selby Grove, MD

Average pressure in August - Selby Grove, 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
Selby Grove, MD

Average wind speed in August - Selby Grove, 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
Selby Grove, MD

Average humidity in August - Selby Grove, 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
Selby Grove, MD

Average rainfall in August - Selby Grove, 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
Selby Grove, MD

Average rainfall days in August - Selby Grove, 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
Selby Grove, MD

Average snowfall in August - Selby Grove, 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
Selby Grove, MD

Average snowfall days in August - Selby Grove, 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
Selby Grove, MD

Average daylight in August / Average sunshine in August - Selby Grove, 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
Selby Grove, MD

Average sunshine days in August - Selby Grove, 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
Selby Grove, MD

Average UV index in August - Selby Grove, 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
Selby Grove, MD

Average cloud cover in August - Selby Grove, 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
Selby Grove, MD

Average visibility in August - Selby Grove, 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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Selby Grove, Maryland, USA

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