August weather forecastMarion, SD
August
Weather in August
The last month of the summer, August, is another warm month in Marion, South Dakota, with an average temperature fluctuating between 60.4°F (15.8°C) and 81.7°F (27.6°C).Temperature
August experiences an average high-temperature of a still warm 81.7°F (27.6°C), barely different from July's 83.3°F (28.5°C). Marion, in the month of August, anticipates a consistent average low-temperature of 60.4°F (15.8°C).Heat index
August's mean heat index is computed to be a hot 86°F (30°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
In August, the average relative humidity is 73%.Rainfall
In Marion, in August, during 13.3 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Marion, during the entire year, the rain falls for 111.7 days and collects up to 17.76" (451mm) of precipitation.Snowfall
In Marion, snow does not fall in June through September.Daylight
In Marion, the average length of the day in August is 13h and 55min.On the first day of the month, sunrise is at 6:19 am and sunset at 8:51 pm. On the last day of August, sunrise is at 6:52 am and sunset at 8:05 pm CDT.
Sunshine
In Marion, the average sunshine in August is 10h.UV index
In Marion, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 5 during August, leads to the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Marion, SD
- Average high temperature in August: 81.7°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in August: 60.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in August
Marion, SD
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
Marion, SD
- Average wind speed in August: 8.1mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in August
Marion, SD
- Average humidity in August: 73%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (66%).
Average rainfall in August
Marion, SD
- Average rainfall in August: 2.09"
The wettest month (with the highest rainfall) is June (2.91").
The driest months (with the least rainfall) are January, February and November (0.47").
Average rainfall days in August
Marion, SD
- Average rainfall days in August: 13.3 days
The months with the highest number of rainy days are May and June (16 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in August
Marion, SD
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Marion, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Marion, 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: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in August
Marion, SD
- Average sunshine days in August: 15.4 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in August
Marion, SD
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in August
Marion, SD
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in August
Marion, 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).
