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

66°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 29.76 in (1007.4 mb)
Dewpoint 66°F (19°C)
Visibility 0.75 mi
Last update 30 Sep 5:52 am CDT
Extended Forecast for

Sergeant Bluff IA

Dense Fog Advisory September 30, 06:15am until September 30, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory September 30, 06:15am until September 30, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Today

    High: 71 °F

    Areas Dense
    Fog then
    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers, mainly before 3am, then a chance of sprinkles with a slight chance of showers after 5am. Cloudy, with a low around 59. Calm wind becoming north northeast around 5 mph after midnight. Chance of precipitation is 40%.

    Low: 59 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of sprinkles before 7am. Mostly cloudy, with a high near 64. North northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 64 °F

    Chance
    Sprinkles

  • Thursday Night

    Thursday Night: Cloudy during the early evening, then gradual clearing, with a low around 48. North wind around 5 mph.

    Low: 48 °F

    Gradual
    Clearing

  • Friday

    Friday: Sunny, with a high near 62. North wind around 5 mph becoming east southeast in the afternoon.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Today
A chance of sprinkles between 2pm and 3pm, then a slight chance of showers after 3pm. Areas of dense fog before noon. Otherwise, cloudy, with a high near 71. East southeast wind around 5 mph becoming calm. Chance of precipitation is 20%.
Tonight
A chance of showers, mainly before 3am, then a chance of sprinkles with a slight chance of showers after 5am. Cloudy, with a low around 59. Calm wind becoming north northeast around 5 mph after midnight. Chance of precipitation is 40%.
Thursday
A chance of sprinkles before 7am. Mostly cloudy, with a high near 64. North northeast wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Cloudy during the early evening, then gradual clearing, with a low around 48. North wind around 5 mph.
Friday
Sunny, with a high near 62. North wind around 5 mph becoming east southeast in the afternoon.
Friday Night
Mostly clear, with a low around 49. Calm wind becoming south southeast around 5 mph after midnight.
Saturday
Sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 46.
Monday
Mostly sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sergeant Bluff IA
 42.41°N 96.35°W (Elev. 1194 ft)
Last Update:
3:58 am CDT Sep 30, 2026
Forecast Valid:
6am CDT Sep 30, 2026-6pm CDT Oct 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation