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 and Windy

25°F

-4°C

Humidity 60%
Wind Speed NW 31 G 51 mph
Barometer 30.02 in (1018.4 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 18 Jan 4:52 pm CST
Extended Forecast for

Sioux City IA

Winter Weather Advisory January 18, 05:19pm until January 18, 09:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 18, 05:19pm until January 18, 09:00pm

    NOW until 9:00pm Sun

    Winter Weather Advisory

  • This Afternoon

    High: 24 °F

    Slight Chance
    Snow and
    Blustery

  • Tonight

    Tonight: Partly cloudy, with a low around 0. Blustery, with a north northwest wind 20 to 25 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph.

    Low: 0 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • M.L.King Day

    M.L.King Day: Increasing clouds, with a high near 18. West wind 5 to 10 mph.

    High: 18 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 1. West northwest wind around 5 mph becoming calm in the evening.

    Low: 1 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Increasing clouds, with a high near 27. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 27 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 16. South wind 5 to 10 mph becoming northwest after midnight.

    Low: 16 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Mostly cloudy, with a steady temperature around 24. Blustery, with a north northwest wind around 25 mph, with gusts as high as 45 mph.
Tonight
Partly cloudy, with a low around 0. Blustery, with a north northwest wind 20 to 25 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph.
M.L.King Day
Increasing clouds, with a high near 18. West wind 5 to 10 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 1. West northwest wind around 5 mph becoming calm in the evening.
Tuesday
Increasing clouds, with a high near 27. Light southwest wind becoming south 5 to 10 mph in the morning.
Tuesday Night
A 20 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 16. South wind 5 to 10 mph becoming northwest after midnight.
Wednesday
Partly sunny, with a high near 31.
Wednesday Night
Partly cloudy, with a low around 7.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Mostly cloudy, with a low around 6.
Friday
Partly sunny, with a high near 16.
Friday Night
Mostly cloudy, with a low around -5.
Saturday
A 20 percent chance of snow. Mostly cloudy, with a high near 8.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -6.
Sunday
A 20 percent chance of snow. Mostly sunny, with a high near 13.
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 96.41°W (Elev. 1106 ft)
Last Update:
4:48 pm CST Jan 18, 2026
Forecast Valid:
5pm CST Jan 18, 2026-6pm CST Jan 25, 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