August weather forecast
Charleston, AR

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Weather in August

The last month of the summer, August, is another tropical month in Charleston, Arkansas, with an average temperature ranging between min 68.7°F (20.4°C) and max 91.4°F (33°C).

Temperature

August reports an average high-temperature of a still hot 91.4°F (33°C), slightly varied from July's 92.8°F (33.8°C). The anticipated average low-temperature for August, an agreeable 68.7°F (20.4°C), shows a substantial deviation from the daytime maximums.

Heat index

During August, the heat index is computed to be a scorching 109.4°F (43°C). Attention: Heat exhaustion and heat cramps are anticipated. Prolonged effort can result in heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

July and August, with an average relative humidity of 70%, are the least humid months.

Rainfall

In August, in Charleston, the rain falls for 12.3 days. Throughout August, 2.32" (59mm) of precipitation is accumulated. Throughout the year, in Charleston, Arkansas, there are 123.9 rainfall days, and 20.94" (532mm) of precipitation is accumulated.

Snowfall

In Charleston, Arkansas, snow does not fall in April through November.

Daylight

In August, the average length of the day in Charleston, Arkansas, is 13h and 27min.
On the first day of the month, sunrise is at 6:25 am and sunset at 8:19 pm. On the last day of August, in Charleston, sunrise is at 6:48 am and sunset at 7:44 pm CDT.

Sunshine

In Charleston, Arkansas, the average sunshine in August is 10.8h.

UV index

In August, the average daily maximum UV index in Charleston is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index, 6 during August, leads to the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

How hot is it in Charleston in August?

An average high-temperature, in August, in Charleston, is 91.4°F (33°C) and the average low-temperature is 68.7°F (20.4°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 109.4°F (43°C).

What is the least humid month in Charleston?

The months with the lowest humidity in Charleston are July and August, with an average relative humidity of 70%.

What is the average humidity in August in Charleston?

In Charleston, the average relative humidity in August is 70%.

How many days does it rain in August in Charleston?

In Charleston, during August, the rain falls for 12.3 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When it does not snow in Charleston?

April through November are months without snowfall in Charleston.

How many hours of daylight does Charleston have in August?

The average day length in August in Charleston is 13h and 27min.

What time are sunrise and sunset in August in Charleston?

In August, on the first day of the month, sunrise is at 6:25 am and sunset at 8:19 pm. On the last day of the month, in Charleston, Arkansas, sunrise is at 6:48 am and sunset at 7:44 pm CDT.

How many hours of sunshine does Charleston have in August?

In Charleston, Arkansas, the average sunshine duration in August is 10.8h.

How high is the UV index in August in Charleston?

The average daily maximum UV index in August in Charleston is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Charleston, AR

Average temperature in August - Charleston, AR
  • Average high temperature in August: 91.4°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (48°F).

  • Average low temperature in August: 68.7°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

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Average pressure in August
Charleston, AR

Average pressure in August - Charleston, AR
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Charleston, AR

Average wind speed in August - Charleston, AR
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in August
Charleston, AR

Average humidity in August - Charleston, AR
  • Average humidity in August: 70%

The months with the highest relative humidity are March and May (78%).
The months with the lowest relative humidity are July and August (70%).

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Average rainfall in August
Charleston, AR

Average rainfall in August - Charleston, AR
  • Average rainfall in August: 2.32"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is January (0.91").

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Average rainfall days in August
Charleston, AR

Average rainfall days in August - Charleston, AR
  • Average rainfall days in August: 12.3 days

The months with the highest number of rainy days are May and July (13.3 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in August
Charleston, AR

Average snowfall in August - Charleston, AR
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in August
Charleston, AR

Average snowfall days in August - Charleston, AR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Charleston, AR

Average daylight in August / Average sunshine in August - Charleston, AR
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in August: 10h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).

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Average sunshine days in August
Charleston, AR

Average sunshine days in August - Charleston, AR
  • Average sunshine days in August: 16.2 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (14.8 days).

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Average UV index in August
Charleston, AR

Average UV index in August - Charleston, AR
  • Average UV index in August: 6

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

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Average cloud cover in August
Charleston, AR

Average cloud cover in August - Charleston, AR
  • Average cloud cover in August: 24

The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in August
Charleston, AR

Average visibility in August - Charleston, AR
  • 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).

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Charleston, Arkansas, USA

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