August weather forecastDenby, SD
August
Weather in August
August, the last month of the summer in Denby, is another warm month, with an average temperature varying between 64°F (17.8°C) and 85.6°F (29.8°C).Temperature
The arrival of August denotes a barely perceptible change in the average high-temperatures to a moderately hot 85.6°F (29.8°C) from July's 87.6°F (30.9°C). Denby receives a consistent average low-temperature of 64°F (17.8°C) in August, a substantial dip from the day's heat.Heat index
August's heat index is computed to be a tropical 86°F (30°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Heat index determinations are made taking into account the shade and light air movements. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
August is the least humid month, with an average relative humidity of 48%.Rainfall
In Denby, in August, during 7.3 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Denby, South Dakota, during the entire year, the rain falls for 86.7 days and collects up to 13.66" (347mm) of precipitation.Snowfall
In Denby, snow does not fall in June through August.Daylight
In August, the average length of the day is 13h and 53min.On the first day of the month, sunrise is at 5:40 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:13 am and sunset at 7:25 pm MDT.
Sunshine
With an average of 11.8h of sunshine, August has the most sunshine of the year.UV index
In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 6 in August translates into these instructions:
Deflect overexposure. Sun protection is a necessity. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Denby, SD
- Average high temperature in August: 85.6°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (32.4°F).
- Average low temperature in August: 64°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in August
Denby, SD
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
Denby, SD
- Average wind speed in August: 10.2mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (10.2mph).
Average humidity in August
Denby, SD
- Average humidity in August: 48%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (48%).
Average rainfall in August
Denby, SD
- Average rainfall in August: 0.91"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in August
Denby, SD
- Average rainfall days in August: 7.3 days
The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are February and December (2.5 days).
Average snowfall in August
Denby, SD
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Denby, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (11.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Denby, SD
- Average daylight in August: 13h and 54min
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 6min).
- 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 12min).
Average sunshine days in August
Denby, SD
- Average sunshine days in August: 22.3 days
The month with the most sunshine days is September (22.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in August
Denby, SD
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Denby, SD
- Average cloud cover in August: 16
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in August
Denby, 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).
