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Hourly Forecast
Daylight Hours
07:14
Sunrise
19:27
Sunset
Moon
Waxing Crescent
13:22
Moonrise
21:23
Moonset
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Weather in Sioux Falls today, September 16, 2026
Sioux Falls looks cloudy on September 16, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Expect a grey start, with morning cloud around 100% by 11:00. Outdoor plans early on should not rely on bright skies.
Expect highs of 21°C and cooler readings close to 10°C. Expect humidity between 44% and 97%, most humid near 23:00. A lighter breeze peaks around 14:00 near 4.7 km/h.
The afternoon keeps an overcast feel, as cloud reaches about 100% around 12:00. Outdoor plans may still want a flexible backup. Expect visibility near 14.9 km, with poorer spells close to 4.5 km. The sun rises at 07:14 and sets at 19:27, for a total of 12 hours 13 minutes of sunlight today.
In short, cloud leads the story in Sioux Falls on September 16, 2026; expect limited sun and a peak around 21°C.
Frequently asked questions about weather in Sioux Falls
How warm does it get in Sioux Falls?
The warmest month in Sioux Falls is July, with average high temperatures of 29°C. The average temperature during this period is around 24°C.
How cold does it get in Sioux Falls?
The coldest month in Sioux Falls is January, with average low temperatures of -11°C. The average temperature during this period is around -7°C.
What is the wettest time of year in Sioux Falls?
The wettest month in Sioux Falls is May, with an average of 111mm of precipitation.
What is the driest time of year in Sioux Falls?
The driest month in Sioux Falls is January, with an average of 22mm of precipitation.
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