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

August weather forecast and climate
Richmond, VA

The last month of the summer, August, is another tropical month in Richmond, Virginia, with temperature in the range of an average high of 88.3°F (31.3°C) and an average low of 68.5°F (20.3°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still hot 88.3°F (31.3°C). In August, the average low-temperature is 68.5°F (20.3°C).

Heat index

The average heat index is evaluated at a very hot 101.7°F (38.7°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like wind, metabolic differences, clothing, and activity influence one's weather impression. 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. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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 average relative humidity in August is 71%.

Rainfall

The month with the most rainfall is August when the rain falls for 15.6 days and typically aggregates up to 2.87" (73mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August is 13.6h.

Sunshine

In Richmond, Virginia, the average sunshine in August is 10h.

UV index

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in August in Richmond?

In August, in Richmond, Virginia, the average high-temperature is 88.3°F (31.3°C), and the average low-temperature is 68.5°F (20.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that factores the actual air temperature with the relative humidity, is appraised at 101.7°F (38.7°C).

What is the average humidity in August in Richmond?

In Richmond, Virginia, the average relative humidity in August is 71%.

How many days does it rain in August in Richmond?

In Richmond, in August, it is raining for 15.6 days, with typically 2.87" (73mm) of accumulated precipitation.

What is the wettest month in Richmond?

August is the month with the most rainfall. Rain falls for 15.6 days and accumulates 2.87" (73mm) of precipitation.

When it does not snow in Richmond?

In Richmond, Virginia, snow does not fall in May through October.

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

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

How long on average sun shines in August in Richmond?

In Richmond, Virginia, the average sunshine in August is 10h.

What is the UV index reading in August in Richmond?

The average daily maximum UV index in August in Richmond is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.
Average temperature in August - Richmond, VA
  • Average high temperature in August: 31.3°C

The warmest month (with the highest average high temperature) is July (32.7°C).
The month with the lowest average high temperature is January (7°C).

  • Average low temperature in August: 20.3°C

The month with the highest average low temperature is July (21.2°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).

Average humidity in August - Richmond, VA
  • Average humidity in August: 71%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (68%).

Average rainfall in August - Richmond, VA
  • Average rainfall in August: 73mm

The wettest month (with the highest rainfall) is August (73mm).
The driest month (with the least rainfall) is September (44mm).

Average rainfall days in August - Richmond, VA
  • Average rainfall days in August: 15.6 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is November (9.7 days).

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

The month with the highest snowfall is January (52mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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

The month with the highest number of snowfall days is January (3.3 days).
Months with the least 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 the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in August: 10h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 5.1h).

Average UV index in August - Richmond, VA
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January and December (UV index 2).