August weather forecast
Grantsville, WV

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Weather in August

The last month of the summer, August, is also a moderately hot month in Grantsville, West Virginia, with an average temperature varying between 83.1°F (28.4°C) and 60.1°F (15.6°C).

Temperature

Grantsville's August average high-temperature settles at a still moderately hot 83.1°F (28.4°C), showing a near match with the preceding month. In the month of August, Grantsville witnesses a marked temperature drop at night, averaging a low of 60.1°F (15.6°C).

Heat index

August's heat index is appraised at a hot 91.4°F (33°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

June through August and November, with an average relative humidity of 77%, are the least humid months.

Rainfall

In August, the rain falls for 16.3 days. Throughout August, 2.8" (71mm) of precipitation is accumulated. In Grantsville, during the entire year, the rain falls for 189.9 days and collects up to 38.19" (970mm) of precipitation.

Snowfall

In Grantsville, snow does not fall in May through September.

Daylight

In August, the average length of the day is 13h and 38min.
On the first day of August in Grantsville, sunrise is at 6:26 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 7:55 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.1h of sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 6 during August translates into these guidelines:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

Is it hot in Grantsville during August?

In August, in Grantsville, the average high-temperature is 83.1°F (28.4°C), and the average low-temperature is 60.1°F (15.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is appraised at 91.4°F (33°C).

What are the least humid months in Grantsville?

The months with the lowest humidity in Grantsville are June through August and November, with an average relative humidity of 77%.

What is the average humidity in August in Grantsville?

The average relative humidity in August is 77%.

How much does it rain in Grantsville in August?

In Grantsville, West Virginia, during August, the rain falls for 16.3 days and regularly aggregates up to 2.8" (71mm) of precipitation.

When it does not snow in Grantsville?

May through September are months without snowfall in Grantsville.

What is the average length of the day in August in Grantsville?

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

When are sunrise and sunset in August in Grantsville?

On the first day of August in Grantsville, West Virginia, sunrise is at 6:26 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 7:55 pm EDT.

What month has the most sunshine in Grantsville?

August has the most sunshine of the year in Grantsville, with an average of 10.1h of sunshine.

How many hours of sunshine does Grantsville have in August?

In Grantsville, the average sunshine duration in August is 10.1h.

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

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

What is the UV index reading in August in Grantsville?

In August, the average daily maximum UV index in Grantsville, West Virginia, is 6. A UV Index value 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
Grantsville, WV

Average temperature in August - Grantsville, WV
  • Average high temperature in August: 83.1°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in August: 60.1°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in August
Grantsville, WV

Average pressure in August - Grantsville, WV
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in August
Grantsville, WV

Average wind speed in August - Grantsville, WV
  • Average wind speed in August: 4mph

The windiest months (with the highest average wind speed) are January and February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).

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Average humidity in August
Grantsville, WV

Average humidity in August - Grantsville, WV
  • Average humidity in August: 77%

The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July, August and November (77%).

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Average rainfall in August
Grantsville, WV

Average rainfall in August - Grantsville, WV
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is September (2.05").

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Average rainfall days in August
Grantsville, WV

Average rainfall days in August - Grantsville, WV
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is November (11.7 days).

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Average snowfall in August
Grantsville, WV

Average snowfall in August - Grantsville, WV
  • Average snowfall in August: 0"

The month with the highest snowfall is January (6.22").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Grantsville, WV

Average snowfall days in August - Grantsville, WV
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Grantsville, WV

Average daylight in August / Average sunshine in August - Grantsville, WV
  • 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 1min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in August
Grantsville, WV

Average sunshine days in August - Grantsville, WV
  • Average sunshine days in August: 11.9 days

The month with the most sunshine days is October (15 days).
The month with the least sunshine days is January (7.9 days).

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Average UV index in August
Grantsville, WV

Average UV index in August - Grantsville, WV
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in August
Grantsville, WV

Average cloud cover in August - Grantsville, WV
  • Average cloud cover in August: 35

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in August
Grantsville, WV

Average visibility in August - Grantsville, WV
  • Average visibility in August: 5mi

The months with the highest visibility are April and November (6mi).
The month with the lowest visibility is January (4mi).

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Grantsville, West Virginia, USA

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