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

60°F

16°C

Humidity 50%
Wind Speed E 7 mph
Barometer 29.76 in (1007.7 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Mar 9:52 am CDT
Extended Forecast for

Sioux City IA

Red Flag Warning March 21, 01:00pm until March 21, 10:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Sunny, with a high near 90. West southwest wind 5 to 10 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Breezy, with a southeast wind 10 to 15 mph becoming north northeast 20 to 25 mph after midnight. Winds could gust as high as 40 mph.

    Low: 42 °F

    Mostly Clear
    then Mostly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 55. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 55 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30. North wind 5 to 10 mph becoming light and variable after midnight.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 57. South southeast wind 5 to 10 mph.

    High: 57 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39. South southeast wind around 10 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 90. West southwest wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 42. Breezy, with a southeast wind 10 to 15 mph becoming north northeast 20 to 25 mph after midnight. Winds could gust as high as 40 mph.
Sunday
Mostly sunny, with a high near 55. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 30. North wind 5 to 10 mph becoming light and variable after midnight.
Monday
Partly sunny, with a high near 57. South southeast wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 39. South southeast wind around 10 mph.
Tuesday
Partly sunny, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 44.
Wednesday
Partly sunny, with a high near 73.
Wednesday Night
Mostly cloudy, with a low around 45.
Thursday
Partly sunny, with a high near 63.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.39°W (Elev. 1099 ft)
Last Update:
7:58 am CDT Mar 21, 2026
Forecast Valid:
10am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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