August weather forecastRaleigh, NC
August
Weather in August
August proves to be Raleigh's second warmest month with temperatures lingering around the high 80s. Consistent rainfall measuring 3.43" (87mm) can slightly cool down the city, maintaining a humidity level of 75%. Nonetheless, August continues to showcase longer, brighter days and shorter nights. Wind speeds further decline, ushering in tranquil mornings and evenings. Venturing outdoors during peak sun hours requires necessary sun protection measures.Temperature
In August, Raleigh's weather conditions record an average high-temperature of a still tropical 87.3°F (30.7°C), demonstrating little divergence from the preceding month. During August, the temperature in Raleigh tends to dip to an average of 69.4°F (20.8°C) at night.Heat index
August's average heat index is calculated to be a very hot 100.4°F (38°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.In terms of the heat index, values are set with light wind and shade conditions in mind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital 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.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
In Raleigh, the average relative humidity in August is 75%.Rainfall
The month with the most rainfall is August, when the rain falls for 18 days and typically aggregates up to 3.43" (87mm) of precipitation.Snowfall
In Raleigh, snow does not fall in April through October.Daylight
In Raleigh, the average length of the day in August is 13h and 28min.On the first day of August, sunrise is at 6:22 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 7:42 pm EDT.
Sunshine
The average sunshine in August in Raleigh is 10.3h.UV index
The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: An average UV index of 6 in August transforms into this advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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"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).
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%
The months with the highest relative humidity are May, September and December (76%).
The 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").
The 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).
The 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: 13h and 30min
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 18min
The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
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
The 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
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).
