August weather forecastHenry, SD
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Henry, South Dakota, with an average temperature varying between 80.1°F (26.7°C) and 59°F (15°C).Temperature
The transition from July to August sees average high-temperatures adjusting to a still moderately hot 80.1°F (26.7°C), from a not significantly different 80.8°F (27.1°C). August brings Henry a consistent average low-temperature of 59°F (15°C).Humidity
In Henry, the average relative humidity in August is 69%.Rainfall
In Henry, in August, during 12.4 rainfall days, 1.81" (46mm) of precipitation is typically 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 in Henry, South Dakota.Daylight
The average length of the day in August in Henry is 14h and 1min.On the first day of the month, sunrise is at 6:16 am and sunset at 8:55 pm. On the last day of August, in Henry, sunrise is at 6:51 am and sunset at 8:08 pm CDT.
Sunshine
The average sunshine in August is 10.3h.UV index
In Henry, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 5 in August interprets into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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
Henry, 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).
