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 56%
Wind Speed E 6 mph
Barometer 29.85 in (1010.6 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 20 Mar 11:52 pm 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

  • Overnight

    Overnight: Mostly clear, with a low around 47. East southeast wind around 5 mph becoming calm.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. South wind 5 to 15 mph becoming west southwest in the morning.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. South wind 5 to 15 mph becoming north northeast after midnight. Winds could gust as high as 30 mph.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 56. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 56 °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, with gusts as high as 20 mph.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 57. East wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 57 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 47. East southeast wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 88. South wind 5 to 15 mph becoming west southwest in the morning.
Saturday Night
Partly cloudy, with a low around 44. South wind 5 to 15 mph becoming north northeast after midnight. Winds could gust as high as 30 mph.
Sunday
Mostly sunny, with a high near 56. 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, with gusts as high as 20 mph.
Monday
Increasing clouds, with a high near 57. East wind 5 to 10 mph becoming south southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 64. Breezy.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Mostly sunny, with a high near 49.
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:
12:43 am CDT Mar 21, 2026
Forecast Valid:
12am 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