Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August notes an average high-temperature of a moderately hot 85.8°F (29.9°C), subtly differing from July's 88°F (31.1°C). August in Dallas is characterized by a distinct thermal shift, with nighttime lows averaging at a refreshing 63.9°F (17.7°C).Heat index
In August, the average heat index is computed to be a tropical 89.6°F (32°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
August and September, with an average relative humidity of 57%, are the least humid months in Dallas.Rainfall
In Dallas, South Dakota, during August, the rain falls for 11.8 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, in Dallas, there are 103.9 rainfall days, and 16.85" (428mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Dallas, South Dakota.Daylight
In Dallas, the average length of the day in August is 13h and 54min.On the first day of the month, sunrise is at 6:29 am and sunset at 8:59 pm. On the last day of August, in Dallas, sunrise is at 7:02 am and sunset at 8:14 pm CDT.
Sunshine
The average sunshine in August in Dallas, South Dakota, is 11h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
How hot is it in Dallas in August?
What is the least humid month in Dallas?
What is the average humidity in August in Dallas?
How much does it rain in Dallas in August?
When it does not snow in Dallas?
What is the average length of the day in August in Dallas?
What time are sunrise and sunset in August in Dallas?
How long on average sun shines in August in Dallas?
What are the months with the highest UV index in Dallas?
What is the UV index intensity in August in Dallas?
Average temperature in August
Dallas, SD
- Average high temperature in August: 85.8°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in August: 63.9°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in August
Dallas, SD
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in August
Dallas, SD
- Average wind speed in August: 9.8mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in August
Dallas, SD
- Average humidity in August: 57%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).
Average rainfall in August
Dallas, SD
- Average rainfall in August: 1.46"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in August
Dallas, SD
- Average rainfall days in August: 11.8 days
The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).
Average snowfall in August
Dallas, SD
- Average snowfall in August: 0"
The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Dallas, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Dallas, SD
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in August: 11h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in August
Dallas, SD
- Average sunshine days in August: 15.4 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in August
Dallas, SD
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Dallas, SD
- Average cloud cover in August: 20
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in August
Dallas, SD
- 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).
Dallas, South Dakota, USA
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