August weather forecast
Mountain Island, NC

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Weather in August

The last month of the summer, August, is another hot month in Mountain Island, North Carolina, with an average temperature fluctuating between 67.8°F (19.9°C) and 88.3°F (31.3°C).

Temperature

August commences with an average high-temperature of a still tropical 88.3°F (31.3°C), showing little deviation from July's 90.1°F (32.3°C). Mountain Island, in August, experiences an average temperature of 67.8°F (19.9°C) at night.

Heat index

August's mean heat index is appraised at a sweltering 102.2°F (39°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in August in Mountain Island is 72%.

Rainfall

The month with the most rainfall in Mountain Island is August, when the rain falls for 17.8 days and typically aggregates up to 3.43" (87mm) of precipitation.

Snowfall

In Mountain Island, snow does not fall in April through October.

Daylight

In August, the average length of the day in Mountain Island is 13h and 27min.
On the first day of August, sunrise is at 6:33 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 7:51 pm EDT.

Sunshine

In August, the average sunshine is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 6 in August translates into this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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Frequently asked questions

How hot is August in Mountain Island?

In Mountain Island, 88.3°F (31.3°C) is the average high-temperature and 67.8°F (19.9°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 appraised at 102.2°F (39°C).

What is the average humidity in August in Mountain Island?

In August, the average relative humidity in Mountain Island, North Carolina, is 72%.

What is the rainiest month in Mountain Island?

The month with the most rainfall in Mountain Island is August, when the rain falls for 17.8 days and typically aggregates up to 3.43" (87mm) of precipitation.

How much does it rain in Mountain Island in August?

In Mountain Island, North Carolina, in August, it is raining for 17.8 days, with typically 3.43" (87mm) of accumulated precipitation.

When it does not snow in Mountain Island?

In Mountain Island, snow does not fall in April through October.

What is the average length of the day in August in Mountain Island?

The average day length in August in Mountain Island is 13h and 27min.

When are sunrise and sunset in August in Mountain Island?

In August, on the first day of the month, sunrise is at 6:33 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 7:51 pm EDT.

How many hours of sunshine does Mountain Island have in August?

In August, the average sunshine duration in Mountain Island is 10.3h.

What is the month with the highest UV index in Mountain Island?

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

What is the UV index reading in August in Mountain Island?

In August, the average daily maximum UV index in Mountain Island, North Carolina, is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Mountain Island, NC

Average temperature in August - Mountain Island, NC
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (47.8°F).

  • Average low temperature in August: 67.8°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

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Average pressure in August
Mountain Island, NC

Average pressure in August - Mountain Island, NC
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in August
Mountain Island, NC

Average wind speed in August - Mountain Island, NC
  • Average wind speed in August: 4.2mph

The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in August
Mountain Island, NC

Average humidity in August - Mountain Island, NC
  • Average humidity in August: 72%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in August
Mountain Island, NC

Average rainfall in August - Mountain Island, NC
  • Average rainfall in August: 3.43"

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is October (1.93").

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Average rainfall days in August
Mountain Island, NC

Average rainfall days in August - Mountain Island, NC
  • Average rainfall days in August: 17.8 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall in August
Mountain Island, NC

Average snowfall in August - Mountain Island, NC
  • Average snowfall in August: 0"

The month with the highest snowfall is December (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Mountain Island, NC

Average snowfall days in August - Mountain Island, NC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Mountain Island, NC

Average daylight in August / Average sunshine in August - Mountain Island, NC
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in August
Mountain Island, NC

Average sunshine days in August - Mountain Island, NC
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (10.6 days).

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Average UV index in August
Mountain Island, NC

Average UV index in August - Mountain Island, NC
  • 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 and December (UV index 2).

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Average cloud cover in August
Mountain Island, NC

Average cloud cover in August - Mountain Island, NC
  • Average cloud cover in August: 33

The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 30).

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Average visibility in August
Mountain Island, NC

Average visibility in August - Mountain Island, NC
  • 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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Mountain Island, North Carolina, USA

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