August weather forecastInterior, SD
August
Weather in August
The last month of the summer, August, is another tropical month in Interior, South Dakota, with an average temperature varying between 87.1°F (30.6°C) and 66.9°F (19.4°C).Temperature
August registers an average high-temperature of a still tropical 87.1°F (30.6°C), slightly varied from July's 89.2°F (31.8°C). The nighttime temperature in Interior dips to a comfortable 66.9°F (19.4°C) on average during August.Heat index
In August, the heat index is calculated to be a hot 89.6°F (32°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
In Interior, South Dakota, the average relative humidity in August is 48%.Rainfall
In August, the rain falls for 10.8 days. Throughout August, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in Interior, there are 95.3 rainfall days, and 13.74" (349mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Interior.Daylight
In August, the average length of the day in Interior is 13h and 56min.On the first day of August, sunrise is at 5:37 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 7:24 pm MDT.
Sunshine
With an average of 11.7h of sunshine, August has the most sunshine of the year in Interior.UV index
In August, the average daily maximum UV index in Interior is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Interior, SD
- Average high temperature in August: 87.1°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in August: 66.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in August
Interior, SD
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
Interior, SD
- Average wind speed in August: 10.2mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).
Average humidity in August
Interior, SD
- Average humidity in August: 48%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).
Average rainfall in August
Interior, SD
- Average rainfall in August: 1.18"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in August
Interior, SD
- Average rainfall days in August: 10.8 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in August
Interior, SD
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Interior, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Interior, SD
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in August: 11h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in August
Interior, SD
- Average sunshine days in August: 16.7 days
The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).
Average UV index in August
Interior, SD
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Interior, SD
- Average cloud cover in August: 18
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in August
Interior, 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).
