August weather forecast
Joshua, SC

Share

Weather in August

The last month of the summer, August, is also a hot month in Joshua, South Carolina, with temperature in the range of an average high of 88.3°F (31.3°C) and an average low of 76.3°F (24.6°C).

Temperature

August's onset records an average high-temperature of a still hot 88.3°F (31.3°C), a near match to July's 89.6°F (32°C). In Joshua, the nighttime temperature averages to a moderately hot 76.3°F (24.6°C) during August.

Heat index

August's heat index is calculated to be an extremely hot 104°F (40°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In Joshua, the average relative humidity in August is 76%.

Rainfall

August is the month with the most rainfall. Rain falls for 22.7 days and accumulates 4.29" (109mm) of precipitation.

Snowfall

March through November are months without snowfall.

Daylight

The average length of the day in August is 13h and 20min.
On the first day of August, sunrise is at 6:34 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 7:45 pm EDT.

Sunshine

In Joshua, South Carolina, the average sunshine in August is 10.7h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during August morphs into the following directions:
Guard against overexposure. Protection from sun-induced harm is essential. 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. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

In Joshua, 88.3°F (31.3°C) is the average high-temperature and 76.3°F (24.6°C) is the average low-temperature during August. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 104°F (40°C).

What is the average humidity in August?

In August, the average relative humidity is 76%.

What is the rainiest month?

The month with the most rainfall is August, when the rain falls for 22.7 days and typically aggregates up to 4.29" (109mm) of precipitation.

How many days does it rain in August?

In Joshua, during August, the rain falls for 22.7 days and regularly aggregates up to 4.29" (109mm) of precipitation.

When it does not snow?

In Joshua, South Carolina, snow does not fall in March through November.

How many hours of daylight does Joshua have in August?

In August, the average day length is 13h and 20min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:34 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 7:45 pm EDT.

How long on average sun shines in August?

In Joshua, the average sunshine duration in August is 10.7h.

What are the months with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

How high is the UV index in August?

In Joshua, the average daily maximum UV index in August is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Joshua, SC

Average temperature in August - Joshua, SC
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in August: 76.3°F

The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).

Average pressure in August
Joshua, SC

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in August
Joshua, SC

Average wind speed in August - Joshua, SC
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in August
Joshua, SC

Average humidity in August - Joshua, SC
  • Average humidity in August: 76%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (72%).

Average rainfall in August
Joshua, SC

Average rainfall in August - Joshua, SC
  • Average rainfall in August: 4.29"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in August
Joshua, SC

Average rainfall days in August - Joshua, SC
  • Average rainfall days in August: 22.7 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (6.9 days).

Average snowfall days in August
Joshua, SC

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

The month with the highest number of snowfall days is December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 10h and 4min

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

Average sunshine days in August
Joshua, SC

Average sunshine days in August - Joshua, SC
  • Average sunshine days in August: 6.1 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (6.1 days).

Average UV index in August
Joshua, SC

Average UV index in August - Joshua, SC
  • Average UV index in August: 7

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

Average cloud cover in August
Joshua, SC

Average cloud cover in August - Joshua, SC
  • Average cloud cover in August: 29

The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 26).

Average visibility in August
Joshua, SC

Average visibility in August - Joshua, 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).

Joshua, South Carolina, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location