August weather forecastDell Rapids, SD
August
Weather in August
The warmth continues in August in Dell Rapids, South Dakota as summer rolls on. Although the temperature takes a slight dip from the peak of July, the weather remains consistently warm and inviting for outdoor pursuits. August often brings with it sporadic rainfall. It's a time of mellow weather and provides an ideal environment for agricultural growth and development. Despite the occasional rain, most days are typically sunny, visible in the vibrant colors all around the city.Temperature
Dell Rapids records an average high-temperature of a still moderately hot 80.6°F (27°C) as August arrives, nearly mirroring the previous month's climate. August nights in Dell Rapids experience a consistent temperature drop to a refreshing 59.4°F (15.2°C).Heat index
During August, the heat index is estimated at 84.2°F (29°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In Dell Rapids, the average relative humidity in August is 73%.Rainfall
In Dell Rapids, during August, the rain falls for 13.3 days and regularly aggregates up to 2.28" (58mm) of precipitation. In Dell Rapids, during the entire year, the rain falls for 116.4 days and collects up to 21.38" (543mm) of precipitation.Snowfall
In Dell Rapids, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 56min.On the first day of August, sunrise is at 6:16 am and sunset at 8:49 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:03 pm CDT.
Sunshine
In August, the average sunshine is 10.1h.UV index
In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Dell Rapids, SD
- Average high temperature in August: 80.6°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in August: 59.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).
Average pressure in August
Dell Rapids, SD
- Average pressure in August: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in August
Dell Rapids, SD
- Average wind speed in August: 8.3mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.2mph).
Average humidity in August
Dell Rapids, SD
- Average humidity in August: 73%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall in August
Dell Rapids, SD
- Average rainfall in August: 2.28"
The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in August
Dell Rapids, SD
- Average rainfall days in August: 13.3 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in August
Dell Rapids, SD
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Dell Rapids, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Dell Rapids, 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 6min
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 0min).
Average sunshine days in August
Dell Rapids, SD
- Average sunshine days in August: 14.9 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in August
Dell Rapids, 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
Dell Rapids, SD
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in August
Dell Rapids, 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).





