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 and Windy

58°F

14°C

Humidity 15%
Wind Speed W 26 G 36 mph
Barometer 29.53 in (1000.1 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 18 Feb 2:52 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, 03:37pm until February 18, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory
Red Flag Warning
  •  
    Red Flag Warning February 18, 03:37pm until February 18, 06:00pm

    NOW until 6:00pm Wed

    Red Flag Warning

  • This Afternoon

    High: 53 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 25. Northwest wind around 10 mph becoming northeast after midnight.

    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. 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: Mostly cloudy, with a low around 11. Northwest wind around 5 mph.

    Low: 11 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 10 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 53. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
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. 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
Mostly cloudy, with a low around 11. Northwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 32.
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.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.41°W (Elev. 1106 ft)
Last Update:
2:48 pm CST Feb 18, 2026
Forecast Valid:
3pm CST Feb 18, 2026-6pm CST Feb 24, 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