August weather forecast
Rock Hill, SC

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This iconic arc within the Fountain Park in Rock Hill, South Carolina, is a major tourist spot in the city and has been set in a scenic natural park garden
This iconic arc within the Fountain Park in Rock Hill, South Carolina, is a major tourist spot in the city and has been set in a scenic natural park garden

Weather in August

Rock Hill’s August weather continues to ride on the tails of summer, offering generous amounts of sunshine. Temperature highs remain elevated, though not as extreme as July, rendering an atmosphere conducive for outdoor activities. The city sees a rise in precipitation, with the month registering the highest rainfall of the year at 3.43" (87mm). Relative humidity is also high, lingering around 70%, which can lead to a sensation of greater warmth. In terms of daylight, August starts to see a reduction with daylight duration scaling down to 13.4 hours.

Temperature

August's advent presents an average high-temperature of a still tropical 88.9°F (31.6°C), indicating a slight variation from the conditions of the previous month. August nights in Rock Hill cool down to an average low-temperature of 69.4°F (20.8°C).

Heat index

August's mean heat index is computed to be a very hot 102.2°F (39°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

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

Rainfall

In Rock Hill, in August, it is raining for 16.8 days, with typically 3.43" (87mm) of accumulated precipitation. In Rock Hill, during the entire year, the rain falls for 159 days and collects up to 32.76" (832mm) of precipitation.

Snowfall

In Rock Hill, snow does not fall in April through November.

Daylight

In August, the average length of the day in Rock Hill is 13h and 26min.
On the first day of the month, sunrise is at 6:34 am and sunset at 8:26 pm. On the last day of August, sunrise is at 6:56 am and sunset at 7:51 pm EDT.

Sunshine

In Rock Hill, South Carolina, the average sunshine in August is 10.2h.

UV index

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 6 in August transforms into this advice:
Shield from overexposure. Defense against sun-related harm is required. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.

Frequently asked questions

How hot does it get in Rock Hill in August?

The average high-temperature, in August, in Rock Hill, is 88.9°F (31.6°C), while the average low-temperature is 69.4°F (20.8°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is computed to be 102.2°F (39°C).

What is the average humidity in August in Rock Hill?

The average relative humidity in August is 70%.

How much does it rain in Rock Hill in August?

In Rock Hill, South Carolina, during August, the rain falls for 16.8 days and regularly aggregates up to 3.43" (87mm) of precipitation.

When it does not snow in Rock Hill?

April through November are months without snowfall in Rock Hill.

What is the average length of the day in August in Rock Hill?

The average day length in August in Rock Hill is 13h and 26min.

What time are sunrise and sunset in August in Rock Hill?

On the first day of August in Rock Hill, sunrise is at 6:34 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 7:51 pm EDT.

How long on average sun shines in August in Rock Hill?

In August, the average sunshine duration in Rock Hill, South Carolina, is 10.2h.

How high is the UV index in August in Rock Hill?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to 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
Rock Hill, SC

Average temperature in August - Rock Hill, SC
  • Average high temperature in August: 88.9°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in August: 69.4°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).

Average pressure in August
Rock Hill, SC

Average pressure in August - Rock Hill, SC
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in August
Rock Hill, SC

Average wind speed in August - Rock Hill, SC
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in August
Rock Hill, SC

Average humidity in August - Rock Hill, SC
  • Average humidity in August: 70%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (69%).

Average rainfall in August
Rock Hill, SC

Average rainfall in August - Rock Hill, SC
  • Average rainfall in August: 3.43"

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in August
Rock Hill, SC

Average rainfall days in August - Rock Hill, SC
  • Average rainfall days in August: 16.8 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is November (9.6 days).

Average snowfall in August
Rock Hill, SC

Average snowfall in August - Rock Hill, SC
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in August
Rock Hill, SC

Average snowfall days in August - Rock Hill, SC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in August /
Average sunshine in August
Rock Hill, SC

Average daylight in August / Average sunshine in August - Rock Hill, SC
  • 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 54min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in August
Rock Hill, SC

Average sunshine days in August - Rock Hill, SC
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in August
Rock Hill, SC

Average UV index in August - Rock Hill, SC
  • Average UV index in August: 6

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

Average cloud cover in August
Rock Hill, SC

Average cloud cover in August - Rock Hill, SC
  • Average cloud cover in August: 33

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in August
Rock Hill, SC

Average visibility in August - Rock Hill, SC
  • 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).

Rock Hill, South Carolina, USA

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