Richmond
Virginia, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Richmond, VA

River James in Richmond, Virginia overlooking the lit city buildings at dusk
River James in Richmond, Virginia overlooking the lit city buildings at dusk
August, the last month of the summer, in Richmond, is also a hot month, with average temperature varying between 87.6°F (30.9°C) and 67.5°F (19.7°C).

Temperature

In Richmond, the average high-temperature is almost the same as in July - a still tropical 87.6°F (30.9°C). In August, the average low-temperature is 67.5°F (19.7°C).

Heat index

The average heat index in August is evaluated at a very hot 103.3°F (39.6°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, metabolic differences, clothing), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The most humid month in Richmond is August, with an average relative humidity of 77.2%.

Rainfall

The month with the most rainfall is August when the rain falls for 9.1 days and typically aggregates up to 4.7" (118.4mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day is 13.6h.

Sunshine

In August, the average sunshine is 9h.

UV index

June through August, with an average maximum UV index of 9, are months with the highest UV index. A UV Index estimate of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 9 in August interpret into the following advice:
Take extra precautions. Protection against sun damage is required. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.

What is the temperature in August in Richmond?

In August, in Richmond, Virginia, the average high-temperature is 87.6°F (30.9°C), and the average low-temperature is 67.5°F (19.7°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines air temperature and relative humidity, is evaluated at 103.3°F (39.6°C).

What is the most humid month in Richmond?

With an average relative humidity of 77.2%, August is the most humid month in Richmond, Virginia.

What is the average humidity in August in Richmond?

In August, the average relative humidity in Richmond is 77.2%.

How much does it rain in Richmond in August?

In Richmond, during August, the rain falls for 9.1 days and regularly aggregates up to 4.7" (118.4mm) of precipitation.

What is the wettest month in Richmond?

The month with the most rainfall in Richmond is August when the rain falls for 9.1 days and typically aggregates up to 4.7" (118.4mm) of precipitation.

When it does not snow in Richmond?

May through October are months without snowfall in Richmond, Virginia.

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

In August, the average length of the day in Richmond is 13.6h.

How long on average sun shines in August in Richmond?

In Richmond, the average sunshine in August is 9h.

What is the month with the highest UV index in Richmond?

June through August, with an average maximum UV index of 9, are months with the highest UV index in Richmond, Virginia.

What is the UV index intensity in August in Richmond?

In August, the average daily maximum UV index is 9. A UV Index reading of 8 to 10 represents a very high health threat from the exposure to the Sun's UV radiation.
Average temperature in August - Richmond, VA
  • Average high temperature in August: 87.6°F

The warmest month (with the highest average high temperature) is July (89.7°F).
The month with the lowest average high temperature is January (47.4°F).

  • Average low temperature in August: 67.4°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28.3°F).

Average humidity in August - Richmond, VA
  • Average humidity in August: 77.2%

The month with the highest relative humidity is August (77.2%).
The month with the lowest relative humidity is April (60.8%).

Average rainfall in August - Richmond, VA
  • Average rainfall in August: 4.7"

The wettest month (with the highest rainfall) is August (4.7").
The driest month (with the lowest rainfall) is February (2.8").

Average rainfall days in August - Richmond, VA
  • Average rainfall days in August: 9.1 days

The month with the highest number of rainy days is July (11.4 days).
The month with the lowest number of rainy days is October (7.4 days).

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

The month with the highest snowfall is January (3.9").
Months with the lowest snowfall are May, June, July, August, September and October (0").

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

Months with the highest number of snowfall days are January and February (1.9 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August / Average sunshine in August - Richmond, VA
  • Average daylight in August: 13.6h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

  • Average sunshine in August: 9h

The month with most sunshine is June (Average sunshine: 10.2h).
The month with least sunshine is December (Average sunshine: 5.3h).

Average UV index in August - Richmond, VA
  • Average UV index in August: 9

Months with the highest UV index are June, July and August (UV index 9).
Months with the lowest UV index are January and December (UV index 2).