August weather forecast and climate
Gretna Green, NC

Weather in August

August, the last month of the summer, in Gretna Green, is another hot month, with temperature in the range of an average high of 86.7°F (30.4°C) and an average low of 68.5°F (20.3°C).

Temperature

In Gretna Green, the average high-temperature is relatively the same as in July - a still tropical 86.7°F (30.4°C). The average low-temperature, in Gretna Green, is 68.5°F (20.3°C).

Heat index

The average heat index is estimated at a torrid 99.9°F (37.7°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, metabolic differences, clothing), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Gretna Green, the average relative humidity in August is 76%.

Rainfall

The month with the most rainfall in Gretna Green is August when the rain falls for 15.2 days and typically aggregates up to 3.07" (78mm) of precipitation.

Snowfall

In Gretna Green snow does not fall in April through October.

Daylight

In August, the average length of the day is 13.5h.

Sunshine

In August, the average sunshine in Gretna Green, North Carolina, is 10.2h.

UV index

Months with the highest UV index in Gretna Green are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in August in Gretna Green?

In Gretna Green, in August, the average high-temperature is 86.7°F (30.4°C), and the average low-temperature is 68.5°F (20.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, in August is calculated to 99.9°F (37.7°C).

What is the average humidity in August in Gretna Green?

In August, the average relative humidity in Gretna Green, North Carolina, is 76%.

How many days does it rain in August in Gretna Green?

In Gretna Green, in August, it is raining for 15.2 days, with typically 3.07" (78mm) of accumulated precipitation.

What is the wettest month in Gretna Green?

August is the month with the most rainfall. Rain falls for 15.2 days and accumulates 3.07" (78mm) of precipitation.

When it does not snow in Gretna Green?

In Gretna Green snow does not fall in April through October.

How many hours of daylight does Gretna Green have in August?

The average length of the day in August in Gretna Green is 13.5h.

How long on average sun shines in August in Gretna Green?

In August, the average sunshine in Gretna Green, North Carolina, is 10.2h.

What is the month with the highest UV index in Gretna Green?

Months with the highest UV index in Gretna Green, North Carolina, are May through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Gretna Green?

In Gretna Green, North Carolina, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in August
Gretna Green, NC

Average temperature in August - Gretna Green, NC
  • Average high temperature in August: 86.7°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (46.8°F).

  • Average low temperature in August: 68.5°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (31.8°F).

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Average pressure in August
Gretna Green, NC

Average pressure in August - Gretna Green, NC
  • Average pressure in August: 29.99"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.96").

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Average wind speed in August
Gretna Green, NC

Average wind speed in August - Gretna Green, NC
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in August
Gretna Green, NC

Average humidity in August - Gretna Green, NC
  • Average humidity in August: 76%

The month with the highest relative humidity is May (79%).
Months with the lowest relative humidity are January, April, July and November (74%).

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Average rainfall in August
Gretna Green, NC

Average rainfall in August - Gretna Green, NC
  • Average rainfall in August: 3.07"

The wettest month (with the highest rainfall) is August (3.07").
The driest month (with the least rainfall) is October (1.85").

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Average rainfall days in August
Gretna Green, NC

Average rainfall days in August - Gretna Green, NC
  • Average rainfall days in August: 15.2 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in August
Gretna Green, NC

Average snowfall in August - Gretna Green, NC
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.3").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Gretna Green, NC

Average snowfall days in August - Gretna Green, NC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.6 days).
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
Gretna Green, NC

Average daylight in August / Average sunshine in August - Gretna Green, NC
  • Average daylight in August: 13.5h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in August: 10.2h

Months with the most sunshine are June and July (Average sunshine: 10.7h).
Months with the least sunshine are January and December (Average sunshine: 5.5).

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Average sunshine days in August
Gretna Green, NC

Average sunshine days in August - Gretna Green, NC
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in August
Gretna Green, NC

Average UV index in August - Gretna Green, NC
  • Average UV index in August: 6

Months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in August
Gretna Green, NC

Average cloud cover in August - Gretna Green, NC
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 44).
Months with the least cloud cover are June and July (Cloud cover 31).

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Average visibility in August
Gretna Green, NC

Average visibility in August - Gretna Green, NC
  • Average visibility in August: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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