August weather forecastRoanoke, WV

August

Weather in August

The last month of the summer, August, is another warm month in Roanoke, West Virginia, with an average temperature varying between 59.5°F (15.3°C) and 82.4°F (28°C).

Temperature

As August unfolds, the average high-temperature reaches a still warm 82.4°F (28°C), hinting at a slight fluctuation from the previous month. Roanoke's nighttime temperature in August demonstrates a noticeable plunge to a moderate 59.5°F (15.3°C).

Heat index

August's mean heat index is calculated to be a tropical 89.6°F (32°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

August is the least humid month, with an average relative humidity of 76%.

Rainfall

In Roanoke, West Virginia, during August, the rain falls for 15.8 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Roanoke, West Virginia, during the entire year, the rain falls for 182.8 days and collects up to 38.62" (981mm) of precipitation.

Snowfall

In Roanoke, snow does not fall in June through September.

Daylight

In August, the average length of the day is 13h and 38min.
On the first day of the month, sunrise is at 6:23 am and sunset at 8:32 pm. On the last day of August, sunrise is at 6:50 am and sunset at 7:53 pm EDT.

Sunshine

The month with the most sunshine is August, with an average of 10.1h of sunshine.

UV index

May, July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in August interprets into the following advice:
Resist extreme sun exposure. Guarding against solar damage is essential. 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. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in August, in Roanoke, is 82.4°F (28°C), while the low-temperature averages to 59.5°F (15.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 89.6°F (32°C).

August is the least humid month, with an average relative humidity of 76%.

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

In Roanoke, in August, during 15.8 rainfall days, 2.44" (62mm) of precipitation is typically accumulated.

In Roanoke, snow does not fall in June through September.

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

On the first day of August, sunrise is at 6:23 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 7:53 pm EDT.

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

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

May, July and August, with an average maximum UV index of 6, are months with the highest UV index.

In Roanoke, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J August S O N D

Jul

August

Sep

Average high temperature

83.7°F

82.4°F

76.6°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.8mph

4.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

15.8

13.2

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

10.3

12.6

13.6

Average UV index

Average cloud cover

Average visibility

Average temperature in August
Roanoke, WV

Average high temperature in August: 82.4°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (37°F).

Average low temperature in August: 59.5°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 (23.5°F).

Average pressure in August
Roanoke, 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).

Average wind speed in August
Roanoke, WV

Average wind speed in August: 4.1mph

The windiest months (with the highest average wind speed) are January and February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average humidity in August
Roanoke, WV

Average humidity in August: 76%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is August (76%).

Average rainfall in August
Roanoke, WV

Average rainfall in August: 2.44"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in August
Roanoke, WV

Average rainfall days in August: 15.8 days

The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is November (11.4 days).

Average snowfall in August
Roanoke, WV

Average snowfall in August: 0"

The month with the highest snowfall is January (8.15").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Roanoke, WV

Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August: 13h and 36min

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 6min

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 18min).

Average sunshine days in August
Roanoke, WV

Average sunshine days in August: 12.6 days

The month with the most sunshine days is October (14.1 days).
The months with the least sunshine days are January and February (7.6 days).

Average UV index in August
Roanoke, WV

Average UV index in August: 6

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