August weather forecast and climate
Raleigh, NC

The George Washington statue overlooking the city buildings of Raleigh, North Carolina
The George Washington statue overlooking the city buildings of Raleigh, North Carolina
August, the last month of the summer, in Raleigh, is another hot month, with average temperature ranging between min 69.4°F (20.8°C) and max 87.3°F (30.7°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still hot 87.3°F (30.7°C). In August, in Raleigh, the average low-temperature is 69.4°F (20.8°C).

Heat index

The average heat index is calculated to a very hot 100.9°F (38.3°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, pregnancy, differences in body mass, height, and shape), 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 normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Raleigh, the average relative humidity is 75%.

Rainfall

The month with the most rainfall in Raleigh is August when the rain falls for 18 days and typically aggregates up to 3.43" (87mm) of precipitation.

Snowfall

April through October are months without snowfall in Raleigh, North Carolina.

Daylight

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

Sunshine

In August, the average sunshine is 10.3h.

UV index

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in August in Raleigh?

In August, in Raleigh, North Carolina, the average high-temperature is 87.3°F (30.7°C), and the average low-temperature is 69.4°F (20.8°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), that combines relative humidity and air temperature, is appraised at 100.9°F (38.3°C).

What is the average humidity in August in Raleigh?

In August, the average relative humidity is 75%.

How much does it rain in Raleigh in August?

In Raleigh, in August, it is raining for 18 days, with typically 3.43" (87mm) of accumulated precipitation.

What is the wettest month in Raleigh?

August is the month with the most rainfall in Raleigh. Rain falls for 18 days and accumulates 3.43" (87mm) of precipitation.

When it does not snow in Raleigh?

April through October are months without snowfall.

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

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

How many hours of sunshine does Raleigh have in August?

In August, the average sunshine in Raleigh, North Carolina, is 10.3h.

How high is the UV index in August in Raleigh?

In August, the average daily maximum UV index in Raleigh, North Carolina, is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.
Average temperature in August - Raleigh, NC
  • Average high temperature in August: 87.3°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (48°F).

  • Average low temperature in August: 69.4°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).

Average pressure in August - Raleigh, NC
  • Average pressure in August: 29.99"

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

Average wind speed in August - Raleigh, NC
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in August - Raleigh, NC
  • Average humidity in August: 75%

Months with the highest relative humidity are May, September and December (76%).
Months with the lowest relative humidity are January, March, April, June, July and November (73%).

Average rainfall in August - Raleigh, 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 (2.13").

Average rainfall days in August - Raleigh, NC
  • Average rainfall days in August: 18 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in August - Raleigh, NC
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.46").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August - Raleigh, NC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.1 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in August / Average sunshine in August - Raleigh, 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: 9.8h).

  • Average sunshine in August: 10.3h

Months with the most sunshine are June and July (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.5h).

Average sunshine days in August - Raleigh, NC
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (10.5 days).

Average UV index in August - Raleigh, NC
  • Average UV index in August: 6

Months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in August - Raleigh, NC
  • Average cloud cover in August: 33

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in August - Raleigh, 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).