August weather forecast
Harrisonburg, VA

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Weather in August

Augmenting August with warm afternoons with temperatures peaking at 82°F (27.8°C), the weather in Harrisonburg, Virginia remains firmly in the summer threshold. Nonetheless, signs of the upcoming autumn start to show, with a slight reduction in heat from July, and a tad increase in the overall rainfall levels. Despite the humidity, ample sunshine makes it a great time to enjoy outdoor activities. August wraps up the summer season but continues to sustain the lively, vibrant atmosphere unique to Harrisonburg.

Temperature

Harrisonburg experiences an average high-temperature of a still warm 82°F (27.8°C) with the onset of August, subtly varied from July's 83.8°F (28.8°C). Harrisonburg records a marked daily temperature contrast, with an average low-temperature of 60.1°F (15.6°C) during the nights of August.

Heat index

The average heat index in August is evaluated at a tropical 87.8°F (31°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

The average relative humidity in August is 76%.

Rainfall

In Harrisonburg, Virginia, in August, during 18 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Harrisonburg, Virginia, during the entire year, the rain falls for 167.3 days and collects up to 30.35" (771mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 37min.
On the first day of August, sunrise is at 6:18 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:46 pm EDT.

Sunshine

The average sunshine in August is 10.1h.

UV index

In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: In August, the average maximum UV index of 5 translates into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Harrisonburg in August?

In Harrisonburg, 82°F (27.8°C) is the average high-temperature and 60.1°F (15.6°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in August in Harrisonburg?

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

How much does it rain in Harrisonburg in August?

In Harrisonburg, Virginia, in August, during 18 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When it does not snow in Harrisonburg?

In Harrisonburg, Virginia, snow does not fall in June through September.

How many hours of daylight does Harrisonburg have in August?

In August, the average day length is 13h and 37min.

What time are sunrise and sunset in August in Harrisonburg?

In August, on the first day of the month, sunrise is at 6:18 am and sunset at 8:25 pm. On the last day of the month, in Harrisonburg, sunrise is at 6:44 am and sunset at 7:46 pm EDT.

How many hours of sunshine does Harrisonburg have in August?

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

What is the UV index intensity in August in Harrisonburg?

In Harrisonburg, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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
Harrisonburg, VA

Average temperature in August - Harrisonburg, VA
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in August: 60.1°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in August
Harrisonburg, VA

Average pressure in August - Harrisonburg, VA
  • 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
Harrisonburg, VA

Average wind speed in August - Harrisonburg, VA
  • Average wind speed in August: 4.3mph

The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in August
Harrisonburg, VA

Average humidity in August - Harrisonburg, VA
  • Average humidity in August: 76%

The months with the highest relative humidity are May, September and October (78%).
The months with the lowest relative humidity are January and July (74%).

Average rainfall in August
Harrisonburg, VA

Average rainfall in August - Harrisonburg, VA
  • Average rainfall in August: 2.91"

The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days in August
Harrisonburg, VA

Average rainfall days in August - Harrisonburg, VA
  • Average rainfall days in August: 18 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9 days).

Average snowfall in August
Harrisonburg, VA

Average snowfall in August - Harrisonburg, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is March (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Harrisonburg, VA

Average snowfall days in August - Harrisonburg, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Harrisonburg, VA

Average daylight in August / Average sunshine in August - Harrisonburg, VA
  • Average daylight in August: 13h and 4min

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

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in August
Harrisonburg, VA

Average sunshine days in August - Harrisonburg, VA
  • Average sunshine days in August: 10.7 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.9 days).

Average UV index in August
Harrisonburg, VA

Average UV index in August - Harrisonburg, VA
  • Average UV index in August: 5

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

Average cloud cover in August
Harrisonburg, VA

Average cloud cover in August - Harrisonburg, VA
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 32).

Average visibility in August
Harrisonburg, VA

Average visibility in August - Harrisonburg, VA
  • Average visibility in August: 5mi

The months with the highest visibility are February, April, June, July and November (6mi).
The months with the lowest visibility are January, March, May, August, September, October and December (5mi).

Harrisonburg, Virginia, USA

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