Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The introduction of August sees an average high-temperature of a still hot 86.4°F (30.2°C), hardly deviating from July. Throughout the nights in August, Charleston experiences an average low-temperature of 67.6°F (19.8°C).Heat index
The average heat index in August is computed to be a sweltering 98.6°F (37°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
In Charleston, the average relative humidity in August is 76%.Rainfall
In Charleston, in August, during 13.7 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Charleston, during the entire year, the rain falls for 153 days and collects up to 33.9" (861mm) of precipitation.Snowfall
In Charleston, snow does not fall in May through October.Daylight
In Charleston, the average length of the day in August is 13h and 32min.On the first day of August in Charleston, sunrise is at 6:03 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:26 pm CDT.
Sunshine
In Charleston, Missouri, the average sunshine in August is 10.5h.UV index
The months with the highest UV index in Charleston are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In August, a daily UV index of 6 turns into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
How hot is August in Charleston?
What is the average humidity in August in Charleston?
How many days does it rain in August in Charleston?
When it does not snow in Charleston?
How many hours of daylight does Charleston have in August?
What time are sunrise and sunset in August in Charleston?
How long on average sun shines in August in Charleston?
What is the month with the highest UV index in Charleston?
How high is the UV index in August in Charleston?
Average temperature in August
Charleston, MO
- Average high temperature in August: 86.4°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in August: 67.6°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in August
Charleston, MO
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in August
Charleston, MO
- Average wind speed in August: 5.7mph
The windiest months (with the highest average wind speed) are January, February and March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in August
Charleston, MO
- Average humidity in August: 76%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in August
Charleston, MO
- Average rainfall in August: 2.68"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in August
Charleston, MO
- Average rainfall days in August: 13.7 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in August
Charleston, MO
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Charleston, MO
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (3.6 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
Charleston, MO
- Average daylight in August: 13h and 3min
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 42min).
- Average sunshine in August: 10h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in August
Charleston, MO
- Average sunshine days in August: 15.1 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in August
Charleston, MO
- 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
Charleston, MO
- Average cloud cover in August: 27
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in August
Charleston, MO
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Charleston, Missouri, USA
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