August weather forecast
Charles City, VA

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Weather in August

August, the last month of the summer in Charles City, is also a hot month, with temperature in the range of an average low of 68.2°F (20.1°C) and an average high of 87.1°F (30.6°C).

Temperature

Charles City's entry into August measures an average high-temperature of a still hot 87.1°F (30.6°C), closely parallel to the preceding month. Charles City records an average low-temperature of 68.2°F (20.1°C) throughout the month of August.

Heat index

The heat index for August is calculated to be a torrid 100.4°F (38°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Heat index details are generally centered around shaded locations and a mild breeze. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In August, the average relative humidity is 75%.

Rainfall

The month with the most rainfall is August, when the rain falls for 17.4 days and typically aggregates up to 3.7" (94mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August is 13h and 33min.
On the first day of August, sunrise is at 6:13 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:38 pm EDT.

Sunshine

In Charles City, the average sunshine in August is 10h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

August temperatures vary between a high-temperature of 87.1°F (30.6°C) and a low-temperature of 68.2°F (20.1°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 100.4°F (38°C).

What is the average humidity in August?

In August, the average relative humidity in Charles City is 75%.

What is the wettest month?

August is the month with the most rainfall. Rain falls for 17.4 days and accumulates 3.7" (94mm) of precipitation.

How much does it rain in August?

In Charles City, in August, it is raining for 17.4 days, with typically 3.7" (94mm) of accumulated precipitation.

When it does not snow?

In Charles City, snow does not fall in May through October.

What is the average length of the day in August?

In Charles City, the average day length in August is 13h and 33min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:13 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:38 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August is 10h.

When is the highest UV index?

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

How high is the UV index in August?

In Charles City, Virginia, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's 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
Charles City, VA

Average temperature in August - Charles City, VA
  • Average high temperature in August: 87.1°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in August: 68.2°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

Average pressure in August
Charles City, VA

Average pressure in August - Charles City, VA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Charles City, VA

Average wind speed in August - Charles City, VA
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in August
Charles City, VA

Average humidity in August - Charles City, VA
  • Average humidity in August: 75%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is July (73%).

Average rainfall in August
Charles City, VA

Average rainfall in August - Charles City, VA
  • Average rainfall in August: 3.7"

The wettest month (with the highest rainfall) is August (3.7").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days in August
Charles City, VA

Average rainfall days in August - Charles City, VA
  • Average rainfall days in August: 17.4 days

The month with the highest number of rainy days is May (18.4 days).
The months with the least rainy days are January and November (10.2 days).

Average snowfall in August
Charles City, VA

Average snowfall in August - Charles City, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Charles City, VA

Average snowfall days in August - Charles City, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.3 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
Charles City, VA

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

Average sunshine days in August
Charles City, VA

Average sunshine days in August - Charles City, VA
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in August
Charles City, VA

Average UV index in August - Charles City, 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 and December (UV index 2).

Average cloud cover in August
Charles City, VA

Average cloud cover in August - Charles City, VA
  • Average cloud cover in August: 36

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in August
Charles City, VA

Average visibility in August - Charles City, VA
  • Average visibility in August: 6mi

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

Charles City, Virginia, USA

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