National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sioux City, Sioux Gateway Airport (KSUX)

Lat: 42.4°NLon: 96.38°WElev: 1099ft.

Fair

87°F

31°C

Humidity 63%
Wind Speed S 7 mph
Barometer 29.84 in (1009.5 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 2 Sep 1:52 pm CDT
Extended Forecast for

South Sioux City NE

  • This Afternoon

    This Afternoon: Sunny, with a high near 91. South wind 5 to 10 mph.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. East southeast wind around 5 mph.

    Low: 70 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Partly sunny, then gradually becoming sunny, with a high near 93. Heat index values as high as 102. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 93 °F

    Chance
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. South southeast wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 94. South wind 5 to 10 mph.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 91. South wind 5 to 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. East southeast wind around 5 mph.
Thursday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Partly sunny, then gradually becoming sunny, with a high near 93. Heat index values as high as 102. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 73. South southeast wind around 5 mph.
Friday
Sunny, with a high near 94. South wind 5 to 10 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. South wind around 5 mph.
Saturday
Mostly sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Labor Day
A 30 percent chance of showers. Partly sunny, with a high near 88.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Sioux City NE
 42.48°N 96.41°W (Elev. 1093 ft)
Last Update:
1:33 pm CDT Sep 2, 2026
Forecast Valid:
2pm CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation