August weather forecast
Fort Mill, SC

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Weather in August

Although not as torrid as July, August still brings along its share of summer heat. The high temperatures hover around 88.7°F (31.5°C), contrasted by cooler nighttime temperatures around 69.4°F (20.8°C). Notably, it is the wettest month of the year, with a peak rainfall of 3.23" (82mm). Despite these showers, it boasts of 10.2 hours of sunshine, living up to summer’s reputation for long, sunny days. The air also remains relatively calm, with average wind speeds dropping to the lowest point for the year at 4.7mph (7.6km/h).

Temperature

August's advent presents an average high-temperature of a still tropical 88.7°F (31.5°C), indicating a slight variation from the conditions of the previous month. During August nights, Fort Mill witnesses a consistent average temperature of 69.4°F (20.8°C).

Heat index

The heat index in August is computed to be a sweltering 102.2°F (39°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in August is 70%.

Rainfall

August is the month with the most rainfall. Rain falls for 16 days and accumulates 3.23" (82mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

The average length of the day in August is 13h and 26min.
On the first day of August, sunrise is at 6:33 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.

Sunshine

In August, the average sunshine in Fort Mill is 10.2h.

UV index

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

In August, in Fort Mill, the average high-temperature is 88.7°F (31.5°C), and the average low-temperature is 69.4°F (20.8°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 102.2°F (39°C).

What is the average humidity in August?

The average relative humidity in August is 70%.

What is the wettest month?

August is the month with the most rainfall. Rain falls for 16 days and accumulates 3.23" (82mm) of precipitation.

How much does it rain in August?

In August, the rain falls for 16 days. Throughout August, 3.23" (82mm) of precipitation is accumulated.

When it does not snow?

In Fort Mill, snow does not fall in April through November.

What is the average length of the day in August?

In August, the average day length is 13h and 26min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:33 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 many hours of sunshine does Fort Mill have in August?

In August, the average sunshine duration is 10.2h.

What is the UV index intensity in August?

In Fort Mill, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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
Fort Mill, SC

Average temperature in August - Fort Mill, SC
  • Average high temperature in August: 88.7°F

The warmest month (with the highest average high temperature) is July (91°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 (34.3°F).

Average pressure in August
Fort Mill, SC

Average pressure in August - Fort Mill, SC
  • Average pressure in August: 30"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
Fort Mill, SC

Average wind speed in August - Fort Mill, SC
  • Average wind speed in August: 4.7mph

The windiest months (with the highest average wind speed) are February and April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in August
Fort Mill, SC

Average humidity in August - Fort Mill, 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
Fort Mill, SC

Average rainfall in August - Fort Mill, SC
  • Average rainfall in August: 3.23"

The wettest month (with the highest rainfall) is August (3.23").
The driest months (with the least rainfall) are September and October (1.81").

Average rainfall days in August
Fort Mill, SC

Average rainfall days in August - Fort Mill, SC
  • Average rainfall days in August: 16 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.3 days).

Average snowfall in August
Fort Mill, SC

Average snowfall in August - Fort Mill, SC
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.26").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in August
Fort Mill, SC

Average snowfall days in August - Fort Mill, SC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (1.4 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
Fort Mill, SC

Average daylight in August / Average sunshine in August - Fort Mill, 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 48min).

  • 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
Fort Mill, SC

Average sunshine days in August - Fort Mill, SC
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is October (22 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in August
Fort Mill, SC

Average UV index in August - Fort Mill, 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
Fort Mill, SC

Average cloud cover in August - Fort Mill, SC
  • Average cloud cover in August: 34

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

Average visibility in August
Fort Mill, SC

Average visibility in August - Fort Mill, 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).

Fort Mill, South Carolina, USA

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