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

54°F

12°C

Humidity 19%
Wind Speed NW 14 mph
Barometer 29.57 in (1001.5 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 18 Feb 4:52 pm CST
Extended Forecast for

Sioux City IA

Winter Weather Advisory February 19, 12:00pm until February 20, 06:00am
Red Flag Warning February 18, 05:34pm until February 18, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory
...
  •  
    Red Flag Warning February 18, 05:34pm until February 18, 06:00pm

    NOW until 6:00pm Wed

    Red Flag Warning

  • Tonight

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Snow, mainly after noon. High near 38. Northeast wind 10 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of around 3 inches.

    High: 38 °F

    Chance Snow
    then Snow

  • Thursday Night

    Thursday Night: Snow, mainly before midnight. Low around 17. North northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of around 2 inches.

    Low: 17 °F

    Snow then
    Chance Snow

  • Friday

    Friday: Mostly sunny, with a high near 29. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 29 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 11. Northwest wind around 5 mph.

    Low: 11 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 31. Northwest wind 5 to 10 mph.

    High: 31 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 28.

    High: 28 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 25. Northwest wind around 10 mph becoming northeast after midnight.
Thursday
Snow, mainly after noon. High near 38. Northeast wind 10 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of around 3 inches.
Thursday Night
Snow, mainly before midnight. Low around 17. North northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of around 2 inches.
Friday
Mostly sunny, with a high near 29. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 11. Northwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 31. Northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 10.
Sunday
Sunny, with a high near 28.
Sunday Night
Mostly clear, with a low around 4.
Monday
Mostly sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Mostly sunny, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.39°W (Elev. 1099 ft)
Last Update:
2:48 pm CST Feb 18, 2026
Forecast Valid:
5pm CST Feb 18, 2026-6pm CST Feb 25, 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