National Weather Service Forecast for: South Sioux City NE
Issued by: National Weather Service Sioux Falls, SD
Updated: 12:43 pm CDT Oct 6, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 85. West wind around 5 mph.
Sunny

Tonight

Tonight: Mostly clear, with a low around 53. Calm wind becoming north northwest around 5 mph after midnight.
Mostly Clear

Wednesday

Wednesday: Sunny, with a high near 76. Northwest wind around 5 mph.
Sunny

Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 49. Calm wind.
Partly Cloudy

Thursday

Thursday: Mostly sunny, with a high near 71. Calm wind becoming east southeast around 5 mph.
Mostly Sunny

Thursday
Night
Thursday Night: Partly cloudy, with a low around 52. Calm wind becoming southeast around 5 mph.
Partly Cloudy

Friday

Friday: Sunny, with a high near 76.
Sunny

Friday
Night
Friday Night: Mostly clear, with a low around 61.
Mostly Clear

Saturday

Saturday: Sunny, with a high near 82. Breezy.
Sunny then
Sunny and
Breezy
Hi 85 °F Lo 53 °F Hi 76 °F Lo 49 °F Hi 71 °F Lo 52 °F Hi 76 °F Lo 61 °F Hi 82 °F

 

This Afternoon
 
Sunny, with a high near 85. West wind around 5 mph.
Tonight
 
Mostly clear, with a low around 53. Calm wind becoming north northwest around 5 mph after midnight.
Wednesday
 
Sunny, with a high near 76. Northwest wind around 5 mph.
Wednesday Night
 
Partly cloudy, with a low around 49. Calm wind.
Thursday
 
Mostly sunny, with a high near 71. Calm wind becoming east southeast around 5 mph.
Thursday Night
 
Partly cloudy, with a low around 52. Calm wind becoming southeast around 5 mph.
Friday
 
Sunny, with a high near 76.
Friday Night
 
Mostly clear, with a low around 61.
Saturday
 
Sunny, with a high near 82. Breezy.
Saturday Night
 
Clear, with a low around 62.
Sunday
 
Sunny, with a high near 77.
Sunday Night
 
A 30 percent chance of showers. Partly cloudy, with a low around 56.
Columbus Day
 
A 30 percent chance of showers. Partly sunny, with a high near 64.

 

Forecast from NOAA-NWS for South Sioux City NE.