Current conditions at

Sioux City, Sioux Gateway Airport (KSUX)

Lat: 42.4°NLon: 96.38°WElev: 1099ft.

Fair

53°F

12°C

Humidity 59%
Wind Speed E 7 mph
Barometer 29.77 in (1008.1 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 21 Mar 8:52 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. South wind 5 to 10 mph becoming west in the afternoon.

    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. South wind 5 to 10 mph becoming west in the afternoon.
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.
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ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.39°W (Elev. 1099 ft)
7:58 am CDT Mar 21, 2026
9am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
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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