August weather forecastVienna, SD
August
Weather in August
The last month of the summer, August, is another warm month in Vienna, South Dakota, with an average temperature ranging between max 80.1°F (26.7°C) and min 59°F (15°C).Temperature
August registers an average high-temperature of a still moderately hot 80.1°F (26.7°C), slightly varied from July's 80.8°F (27.1°C). Vienna usually reports an average low-temperature of 59°F (15°C) during the month of August.Humidity
In Vienna, the average relative humidity in August is 69%.Rainfall
In August, in Vienna, the rain falls for 12.4 days. Throughout August, 1.81" (46mm) of precipitation is accumulated. Throughout the year, there are 112.3 rainfall days, and 18.78" (477mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August in Vienna, South Dakota, is 14h and 0min.On the first day of August in Vienna, sunrise is at 6:17 am and sunset at 8:55 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 8:07 pm CDT.
Sunshine
In August, the average sunshine is 10.3h.UV index
In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In August, the maximum UV index of 5 suggests this advice:
Guard yourself - Precautionary measures against sun damage are advocated. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Vienna, SD
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.4°F).
- Average low temperature in August: 59°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).
Average pressure in August
Vienna, SD
- Average pressure in August: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
Vienna, SD
- Average wind speed in August: 8.6mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity in August
Vienna, SD
- Average humidity in August: 69%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are September and October (68%).
Average rainfall in August
Vienna, SD
- Average rainfall in August: 1.81"
The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.59").
Average rainfall days in August
Vienna, SD
- Average rainfall days in August: 12.4 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in August
Vienna, SD
- Average snowfall in August: 0"
The months with the highest snowfall are January and December (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Vienna, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Vienna, SD
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in August: 10h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Vienna, SD
- Average sunshine days in August: 15.7 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in August
Vienna, 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 and December (UV index 1).
Average cloud cover in August
Vienna, SD
- Average cloud cover in August: 27
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in August
Vienna, SD
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
