August weather forecast
Rapidan, VA

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Weather in August

August, the last month of the summer in Rapidan, is another hot month, with an average temperature ranging between max 86°F (30°C) and min 64.4°F (18°C).

Temperature

The commencement of August brings an average high-temperature of a still tropical 86°F (30°C), marking an inconsequential divergence from July. Rapidan, in the heat of August, registers a significant plunge to a mean of 64.4°F (18°C) during the nights.

Heat index

The heat index value during August is calculated to be a fiery hot 96.8°F (36°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Always consider that heat index estimations are for light winds and places in the shade. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Rapidan, the average relative humidity in August is 73%.

Rainfall

In Rapidan, in August, during 15.5 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. In Rapidan, during the entire year, the rain falls for 158.3 days and collects up to 28.5" (724mm) of precipitation.

Snowfall

In Rapidan, snow does not fall in May through October.

Daylight

The average length of the day in August is 13h and 37min.
On the first day of the month, sunrise is at 6:15 am and sunset at 8:21 pm. On the last day of August, sunrise is at 6:41 am and sunset at 7:43 pm EDT.

Sunshine

The average sunshine in August 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 reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during August?

The high-temperature, in August, in Rapidan, records 86°F (30°C), while the low-temperature is 64.4°F (18°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in August is calculated to be 96.8°F (36°C).

What is the average humidity in August?

In August, the average relative humidity is 73%.

How much does it rain in August?

In Rapidan, in August, during 15.5 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Rapidan have in August?

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

What time are sunrise and sunset in August in Rapidan?

In August, on the first day of the month, sunrise is at 6:15 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 7:43 pm EDT.

How many hours of sunshine does Rapidan have in August?

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

When is the highest UV index in Rapidan?

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

What is the UV index reading in August?

In Rapidan, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe 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
Rapidan, VA

Average temperature in August - Rapidan, VA
  • Average high temperature in August: 86°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in August: 64.4°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

Average pressure in August
Rapidan, VA

Average pressure in August - Rapidan, VA
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in August
Rapidan, VA

Average wind speed in August - Rapidan, VA
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in August
Rapidan, VA

Average humidity in August - Rapidan, VA
  • Average humidity in August: 73%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).

Average rainfall in August
Rapidan, VA

Average rainfall in August - Rapidan, VA
  • Average rainfall in August: 2.64"

The wettest month (with the highest rainfall) is April (2.95").
The driest months (with the least rainfall) are January and September (1.85").

Average rainfall days in August
Rapidan, VA

Average rainfall days in August - Rapidan, VA
  • Average rainfall days in August: 15.5 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in August
Rapidan, VA

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

The month with the highest snowfall is January (2.99").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Rapidan, VA

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

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Rapidan, 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 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in August
Rapidan, VA

Average sunshine days in August - Rapidan, VA
  • Average sunshine days in August: 13.3 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.7 days).

Average UV index in August
Rapidan, VA

Average UV index in August - Rapidan, VA
  • 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, February, November and December (UV index 2).

Average cloud cover in August
Rapidan, VA

Average cloud cover in August - Rapidan, VA
  • Average cloud cover in August: 33

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in August
Rapidan, VA

Average visibility in August - Rapidan, VA
  • Average visibility in August: 6mi

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

Rapidan, Virginia, USA

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