August weather forecastRapid Valley, SD
August
Weather in August
August, the last month of the summer in Rapid Valley, is also a moderately hot month, with an average temperature ranging between max 82.8°F (28.2°C) and min 61.5°F (16.4°C).Temperature
August commences with an average high-temperature of a still warm 82.8°F (28.2°C), showing little deviation from July's 84.7°F (29.3°C). Rapid Valley registers a consistent average low-temperature of 61.5°F (16.4°C) during August.Heat index
In August, the heat index is estimated at 84.2°F (29°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.Be advised, the heat index considers values for conditions in shade and with a light breeze. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
August and September, with an average relative humidity of 50%, are the least humid months in Rapid Valley.Rainfall
In Rapid Valley, South Dakota, in August, it is raining for 12.8 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, there are 118.8 rainfall days, and 15.39" (391mm) of precipitation is accumulated.Snowfall
June through August are months without snowfall in Rapid Valley.Daylight
In Rapid Valley, the average length of the day in August is 13h and 57min.On the first day of August, sunrise is at 5:41 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:29 pm MDT.
Sunshine
August has the most sunshine of the year in Rapid Valley, with an average of 11.8h of sunshine.UV index
In Rapid Valley, South Dakota, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In August, the maximum UV index of 5 suggests these recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Rapid Valley, SD
- Average high temperature in August: 82.8°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in August
Rapid Valley, SD
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in August
Rapid Valley, SD
- Average wind speed in August: 8.2mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in August
Rapid Valley, SD
- Average humidity in August: 50%
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).
Average rainfall in August
Rapid Valley, SD
- Average rainfall in August: 1.5"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in August
Rapid Valley, SD
- Average rainfall days in August: 12.8 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).
Average snowfall in August
Rapid Valley, SD
- Average snowfall in August: 0"
The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Rapid Valley, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Rapid Valley, SD
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in August: 11h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in August
Rapid Valley, SD
- Average sunshine days in August: 14.5 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).
Average UV index in August
Rapid Valley, SD
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Rapid Valley, SD
- Average cloud cover in August: 16
The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in August
Rapid Valley, 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).
