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

83°F

28°C

Humidity 57%
Wind Speed S 15 mph
Barometer 29.80 in (1008.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 29 Aug 12:52 pm CDT
Extended Forecast for

Sioux City IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 92. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 74. South southeast wind around 5 mph.

    Low: 74 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 100. South southwest wind 5 to 10 mph.

    High: 94 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73. South southwest wind around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 91. West wind around 5 mph. Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. West wind around 5 mph becoming calm.

    Low: 69 °F

    Partly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 92. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Increasing clouds, with a low around 74. South southeast wind around 5 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 100. South southwest wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 73. South southwest wind around 5 mph.
Monday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 91. West wind around 5 mph. Chance of precipitation is 20%.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. West wind around 5 mph becoming calm.
Tuesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 88.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 69.
Thursday
Partly sunny, with a high near 90.
Thursday Night
Partly cloudy, with a low around 69.
Friday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.48°N 96.41°W (Elev. 1093 ft)
Last Update:
12:53 pm CDT Aug 29, 2026
Forecast Valid:
1pm CDT Aug 29, 2026-6pm CDT Sep 4, 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