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

72°F

22°C

Humidity 84%
Wind Speed S 5 mph
Barometer 30.00 in (1015.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 17 Aug 11:52 pm CDT
Extended Forecast for

Sioux City IA

  • Overnight

    Overnight: Showers and thunderstorms likely, mainly before 3am, then showers likely and possibly a thunderstorm after 5am. Partly cloudy, with a low around 64. South wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before 10am. Partly sunny, with a high near 79. Calm wind becoming west southwest around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 63. West northwest wind around 5 mph becoming calm.

    Low: 63 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 78. Calm wind.

    High: 78 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind becoming south around 5 mph in the morning.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 63.

    Low: 63 °F

    Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers and thunderstorms likely, mainly before 3am, then showers likely and possibly a thunderstorm after 5am. Partly cloudy, with a low around 64. South wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly before 10am. Partly sunny, with a high near 79. Calm wind becoming west southwest around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly cloudy, with a low around 63. West northwest wind around 5 mph becoming calm.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 78. Calm wind.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 80. Calm wind becoming south around 5 mph in the morning.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 63.
Friday
Mostly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Partly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.41°W (Elev. 1106 ft)
Last Update:
12:08 am CDT Aug 18, 2026
Forecast Valid:
12am CDT Aug 18, 2026-6pm CDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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