August weather forecastSisseton, SD
August
Weather in August
In Sisseton, the weather in August mirrors that of July with similar temperature patterns. Daylight hours shorten slightly compared to July, signaling the imminent arrival of autumn. Despite this, the weather remains warm enough to still enjoy outdoor activities and explore Sisseton's summer landscape. A significant drop in August’s rainfall compared to July signals a change in weather patterns as the city transitions to the cooler months. Likewise, the wind speed remains unchanged compared to July, ensuring consistent weather conditions.Temperature
The transition into August shows a subtle variation to a still warm 80.4°F (26.9°C) from July's 81.1°F (27.3°C) in the average high-temperature. Sisseton experiences a consistent average temperature of 59.7°F (15.4°C) throughout the nights in August.Humidity
The average relative humidity in August is 67%.Rainfall
In Sisseton, in August, it is raining for 11.8 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, there are 107.9 rainfall days, and 20.63" (524mm) of precipitation is accumulated.Snowfall
In Sisseton, snow does not fall in June through September.Daylight
In August, the average length of the day is 14h and 4min.On the first day of the month, sunrise is at 6:12 am and sunset at 8:56 pm. On the last day of August, sunrise is at 6:49 am and sunset at 8:07 pm CDT.
Sunshine
The average sunshine in August in Sisseton, South Dakota, is 10.5h.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 5 in August translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sisseton, SD
- Average high temperature in August: 80.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (19°F).
- Average low temperature in August: 59.7°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in August
Sisseton, SD
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in August
Sisseton, SD
- Average wind speed in August: 8.3mph
The windiest months (with the highest average wind speed) are April and October (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
Average humidity in August
Sisseton, SD
- Average humidity in August: 67%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is September (65%).
Average rainfall in August
Sisseton, SD
- Average rainfall in August: 2.01"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in August
Sisseton, SD
- Average rainfall days in August: 11.8 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (1.6 days).
Average snowfall in August
Sisseton, SD
- Average snowfall in August: 0"
The month with the highest snowfall is December (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Sisseton, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Sisseton, SD
- Average daylight in August: 14h and 6min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in August: 10h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Sisseton, SD
- Average sunshine days in August: 16.2 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in August
Sisseton, 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 December (UV index 1).
Average cloud cover in August
Sisseton, SD
- Average cloud cover in August: 25
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 25).
Average visibility in August
Sisseton, 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).
