August weather forecast
Great Falls, SC

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Weather in August

August, the last month of the summer in Great Falls, is another hot month, with an average temperature ranging between min 70.3°F (21.3°C) and max 88.9°F (31.6°C).

Temperature

The advent of August denotes an average high-temperature of a still tropical 88.9°F (31.6°C), subtly different from July's 91°F (32.8°C). Great Falls's temperature drops to an average low of 70.3°F (21.3°C) during the nights of August.

Heat index

August's heat index is appraised at a blisteringly hot 104°F (40°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. 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 are particularly meaningful for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Great Falls, the average relative humidity in August is 73%.

Rainfall

August is the month with the most rainfall. Rain falls for 16.2 days and accumulates 3.19" (81mm) of precipitation.

Snowfall

In Great Falls, snow does not fall in April through October.

Daylight

In Great Falls, the average length of the day in August is 13h and 25min.
On the first day of August, sunrise is at 6:34 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 7:50 pm EDT.

Sunshine

In Great Falls, South Carolina, the average sunshine in August is 10.3h.

UV index

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Great Falls during August?

In August, the average high-temperature and low-temperature in Great Falls are 88.9°F (31.6°C) and 70.3°F (21.3°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is appraised at 104°F (40°C).

What is the average humidity in August in Great Falls?

In August, the average relative humidity in Great Falls, South Carolina, is 73%.

What is the wettest month in Great Falls?

The month with the most rainfall is August, when the rain falls for 16.2 days and typically aggregates up to 3.19" (81mm) of precipitation.

How much does it rain in Great Falls in August?

In Great Falls, South Carolina, during August, the rain falls for 16.2 days and regularly aggregates up to 3.19" (81mm) of precipitation.

When it does not snow in Great Falls?

April through October are months without snowfall.

What is the average length of the day in August in Great Falls?

The average day length in August is 13h and 25min.

When is the sunrise / sunset in August in Great Falls?

In August, on the first day of the month, sunrise is at 6:34 am and sunset at 8:25 pm. On the last day of the month, in Great Falls, sunrise is at 6:56 am and sunset at 7:50 pm EDT.

How long on average sun shines in August in Great Falls?

In August, the average sunshine duration in Great Falls, South Carolina, is 10.3h.

How high is the UV index in August in Great Falls?

The average daily maximum UV index in August in Great Falls is 6. A UV Index value of 6 to 7 symbolizes a high health threat from 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
Great Falls, SC

Average temperature in August - Great Falls, SC
  • Average high temperature in August: 88.9°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (50.9°F).

  • Average low temperature in August: 70.3°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).

Average pressure in August
Great Falls, SC

Average pressure in August - Great Falls, 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 (29.97"Hg).

Average wind speed in August
Great Falls, SC

Average wind speed in August - Great Falls, SC
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in August
Great Falls, SC

Average humidity in August - Great Falls, SC
  • Average humidity in August: 73%

The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are July and November (71%).

Average rainfall in August
Great Falls, SC

Average rainfall in August - Great Falls, SC
  • Average rainfall in August: 3.19"

The wettest month (with the highest rainfall) is August (3.19").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in August
Great Falls, SC

Average rainfall days in August - Great Falls, SC
  • Average rainfall days in August: 16.2 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is October (8.4 days).

Average snowfall in August
Great Falls, SC

Average snowfall in August - Great Falls, SC
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Great Falls, SC

Average snowfall days in August - Great Falls, SC
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Great Falls, SC

Average daylight in August / Average sunshine in August - Great Falls, SC
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in August
Great Falls, SC

Average sunshine days in August - Great Falls, SC
  • Average sunshine days in August: 12.7 days

The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in August
Great Falls, SC

Average UV index in August - Great Falls, SC
  • 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 January (UV index 2).

Average cloud cover in August
Great Falls, SC

Average cloud cover in August - Great Falls, SC
  • Average cloud cover in August: 33

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in August
Great Falls, SC

Average visibility in August - Great Falls, 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).

Great Falls, South Carolina, USA

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