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.

Fog/Mist

55°F

13°C

Humidity 100%
Wind Speed Calm
Barometer 30.17 in (1021.6 mb)
Dewpoint 55°F (13°C)
Visibility 1.00 mi
Last update 2 Sep 2:52 am CDT
Extended Forecast for

Sioux City IA

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 58. Southwest wind around 5 mph becoming southeast after midnight.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 68. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. North wind 5 to 10 mph becoming light northwest after midnight.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71. Light west wind becoming west southwest 5 to 10 mph in the morning.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 55. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 58. Southwest wind around 5 mph becoming southeast after midnight.
Wednesday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 68. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 42. North wind 5 to 10 mph becoming light northwest after midnight.
Thursday
Sunny, with a high near 71. Light west wind becoming west southwest 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 49.
Friday
Mostly sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 69.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 75.
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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:
1:41 am CDT Sep 2, 2025
Forecast Valid:
2am CDT Sep 2, 2025-6pm CDT Sep 8, 2025
 
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