August weather forecast
Dekalb, SC

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Weather in August

The last month of the summer, August, is also a hot month in Dekalb, South Carolina, with an average temperature fluctuating between 88.5°F (31.4°C) and 71.1°F (21.7°C).

Temperature

The transition into August notes an average high-temperature of a still hot 88.5°F (31.4°C), revealing a mild distinction from the 90.5°F (32.5°C) in July. Dekalb's temperature lowers to a mean of 71.1°F (21.7°C) during the nights in August.

Heat index

For most parts of August, the heat index is computed to be a blistering 104°F (40°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for 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.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Dekalb, the average relative humidity in August is 74%.

Rainfall

August is the month with the most rainfall. Rain falls for 12.7 days and accumulates 1.42" (36mm) of precipitation.

Snowfall

March through December are months without snowfall in Dekalb.

Daylight

In August, the average length of the day is 13h and 24min.
On the first day of August, sunrise is at 6:33 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 7:49 pm EDT.

Sunshine

In Dekalb, the average sunshine in August is 10.5h.

UV index

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in Dekalb in August?

In Dekalb, 88.5°F (31.4°C) is the average high-temperature and 71.1°F (21.7°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is computed to be 104°F (40°C).

What is the average humidity in August in Dekalb?

The average relative humidity in August in Dekalb, South Carolina, is 74%.

What is the wettest month in Dekalb?

The month with the most rainfall is August, when the rain falls for 12.7 days and typically aggregates up to 1.42" (36mm) of precipitation.

How many days does it rain in August in Dekalb?

In Dekalb, in August, it is raining for 12.7 days, with typically 1.42" (36mm) of accumulated precipitation.

When it does not snow in Dekalb?

March through December are months without snowfall in Dekalb.

What is the average length of the day in August in Dekalb?

In Dekalb, the average day length in August is 13h and 24min.

When is the sunrise / sunset in August in Dekalb?

In August, on the first day of the month, sunrise is at 6:33 am and sunset at 8:23 pm. On the last day of the month, in Dekalb, South Carolina, sunrise is at 6:55 am and sunset at 7:49 pm EDT.

How long on average sun shines in August in Dekalb?

In Dekalb, the average sunshine duration in August is 10.5h.

What is the UV index reading in August in Dekalb?

In Dekalb, South Carolina, the average daily maximum UV index in August 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
Dekalb, SC

Average temperature in August - Dekalb, SC
  • Average high temperature in August: 88.5°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (52.2°F).

  • Average low temperature in August: 71.1°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).

Average pressure in August
Dekalb, SC

Average pressure in August - Dekalb, SC
  • Average pressure in August: 29.99"Hg

The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in August
Dekalb, SC

Average wind speed in August - Dekalb, SC
  • Average wind speed in August: 5.3mph

The windiest months (with the highest average wind speed) are February and April (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in August
Dekalb, SC

Average humidity in August - Dekalb, SC
  • Average humidity in August: 74%

The month with the highest relative humidity is May (75%).
The months with the lowest relative humidity are January, March and November (70%).

Average rainfall in August
Dekalb, SC

Average rainfall in August - Dekalb, SC
  • Average rainfall in August: 1.42"

The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.59").

Average rainfall days in August
Dekalb, SC

Average rainfall days in August - Dekalb, SC
  • Average rainfall days in August: 12.7 days

The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is November (5.8 days).

Average snowfall in August
Dekalb, SC

Average snowfall in August - Dekalb, SC
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in August
Dekalb, SC

Average snowfall days in August - Dekalb, SC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).

Average daylight in August /
Average sunshine in August
Dekalb, SC

Average daylight in August / Average sunshine in August - Dekalb, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

Average sunshine days in August
Dekalb, SC

Average sunshine days in August - Dekalb, SC
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is October (23.9 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in August
Dekalb, SC

Average UV index in August - Dekalb, 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
Dekalb, SC

Average cloud cover in August - Dekalb, SC
  • Average cloud cover in August: 31

The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 28).

Average visibility in August
Dekalb, SC

Average visibility in August - Dekalb, 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).

Dekalb, South Carolina, USA

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