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.

Overcast

66°F

19°C

Humidity 87%
Wind Speed SE 9 mph
Barometer 30.03 in (1016.3 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 24 Aug 8:52 am CDT
Extended Forecast for

Sioux City IA

  • Today

    Today: A 20 percent chance of showers and thunderstorms before 10am. Partly sunny, with a high near 79. South wind around 10 mph, with gusts as high as 20 mph.

    High: 79 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. South southeast wind around 5 mph.

    Low: 64 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms between 8am and 9am. Mostly sunny, with a high near 84. South southeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. West wind around 5 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 59. North northwest wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms before 10am. Partly sunny, with a high near 79. South wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 64. South southeast wind around 5 mph.
Tuesday
A slight chance of showers and thunderstorms between 8am and 9am. Mostly sunny, with a high near 84. South southeast wind around 5 mph becoming west in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 63. West wind around 5 mph.
Wednesday
Sunny, with a high near 82. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Clear, with a low around 59. North northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 60.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 85.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.41°W (Elev. 1106 ft)
Last Update:
9:22 am CDT Aug 24, 2026
Forecast Valid:
9am CDT Aug 24, 2026-6pm CDT Aug 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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