National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Sioux City, Sioux Gateway Airport (KSUX)

Lat: 42.4°NLon: 96.38°WElev: 1099ft.

Fair

63°F

17°C

Humidity 87%
Wind Speed NW 3 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 9 Sep 9:52 pm CDT
Extended Forecast for

Sioux City IA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 54. Calm wind.

    Low: 54 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 82. Light south wind increasing to 5 to 10 mph in the afternoon.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 84. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 84 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. South wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph.

    Low: 61 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 75. North wind 5 to 10 mph.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear
    then Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75.

    High: 75 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 54. Calm wind.
Thursday
Sunny, with a high near 82. Light south wind increasing to 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 63. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 84. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Friday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. South wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph.
Saturday
Mostly sunny, with a high near 75. North wind 5 to 10 mph.
Saturday Night
A 30 percent chance of showers after 1am. Mostly clear, with a low around 56.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Monday
Showers likely, mainly before 1pm. Partly sunny, with a high near 78. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 55.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.39°W (Elev. 1099 ft)
Last Update:
9:48 pm CDT Sep 9, 2026
Forecast Valid:
9pm CDT Sep 9, 2026-6pm CDT Sep 16, 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