August weather forecast
Charles Town, WV

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Weather in August

In August, temperatures marginally plummet compared to July’s peaks, signalling the onset of the end of the summer season. Despite the slight dip, August continues to favour warm weather lovers. Frequent showers remain characteristic of this month. It's nearly indistinguishable from July in terms of daylight hours, but a slight variation in wind gust is observable.

Temperature

Charles Town's shift into August sets the average high-temperature at a warm 84°F (28.9°C), a figure that deviates only slightly from July's 86.5°F (30.3°C). An average low-temperature of 63.1°F (17.3°C) is observed during August nights.

Heat index

The heat index for August is computed to be a tropical 91.4°F (33°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In August, the average relative humidity is 75%.

Rainfall

The wettest months are May, July and August, with an average 3.15" (80mm) of rainfall.

Snowfall

In Charles Town, West Virginia, snow does not fall in June through October.

Daylight

The average length of the day in August is 13h and 40min.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:23 pm. On the last day of August, in Charles Town, West Virginia, sunrise is at 6:39 am and sunset at 7:43 pm EDT.

Sunshine

In August, the average sunshine is 10.4h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

The high-temperature during August is 84°F (28.9°C) and the low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is computed to be 91.4°F (33°C).

What is the average humidity in August?

The average relative humidity in August is 75%.

What is the wettest month?

The wettest months are May, July and August, with an average 3.15" (80mm) of rainfall.

How much does it rain in August?

In Charles Town, in August, during 17.3 rainfall days, 3.15" (80mm) of precipitation is typically accumulated.

When it does not snow?

In Charles Town, snow does not fall in June through October.

What is the average length of the day in August?

In Charles Town, the average day length in August is 13h and 40min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:12 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:43 pm EDT.

How many hours of sunshine does Charles Town have in August?

The average sunshine duration in August is 10.4h.

What is the month with the highest UV index in Charles Town?

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

What is the UV index reading in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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
Charles Town, WV

Average temperature in August - Charles Town, WV
  • Average high temperature in August: 84°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

Average pressure in August
Charles Town, WV

Average pressure in August - Charles Town, WV
  • 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 (29.95"Hg).

Average wind speed in August
Charles Town, WV

Average wind speed in August - Charles Town, WV
  • Average wind speed in August: 4.3mph

The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in August
Charles Town, WV

Average humidity in August - Charles Town, WV
  • Average humidity in August: 75%

The months with the highest relative humidity are May, October and December (78%).
The month with the lowest relative humidity is July (73%).

Average rainfall in August
Charles Town, WV

Average rainfall in August - Charles Town, WV
  • Average rainfall in August: 3.15"

The wettest months (with the highest rainfall) are May, July and August (3.15").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in August
Charles Town, WV

Average rainfall days in August - Charles Town, WV
  • Average rainfall days in August: 17.3 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9.2 days).

Average snowfall in August
Charles Town, WV

Average snowfall in August - Charles Town, WV
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.17").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Charles Town, WV

Average snowfall days in August - Charles Town, WV
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Charles Town, WV

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).

Average sunshine days in August
Charles Town, WV

Average sunshine days in August - Charles Town, WV
  • Average sunshine days in August: 12 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in August
Charles Town, WV

Average UV index in August - Charles Town, WV
  • 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
Charles Town, WV

Average cloud cover in August - Charles Town, WV
  • Average cloud cover in August: 32

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in August
Charles Town, WV

Average visibility in August - Charles Town, WV
  • Average visibility in August: 6mi

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

Charles Town, West Virginia, USA

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