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.

Partly Cloudy

83°F

28°C

Humidity 79%
Wind Speed E 7 mph
Barometer 29.93 in (1012.8 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 1 Sep 11:52 am CDT
Extended Forecast for

Sioux City IA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 89. East southeast wind 5 to 10 mph.

    High: 89 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 69. East southeast wind 5 to 10 mph becoming north northeast after midnight. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms then
    Severe
    Thunderstorms

  • Wednesday

    Wednesday: A 10 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 89. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 89 °F

    Slight Chance
    T-storms then
    Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after midnight. Partly cloudy, with a low around 70. Southeast wind around 5 mph.

    Low: 70 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 91. East southeast wind 5 to 10 mph becoming south in the afternoon.

    High: 91 °F

    Slight Chance
    T-storms then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 89. East southeast wind 5 to 10 mph.
Tonight
Showers and thunderstorms likely, mainly before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 69. East southeast wind 5 to 10 mph becoming north northeast after midnight. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 10 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 89. Calm wind becoming west southwest around 5 mph in the afternoon.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after midnight. Partly cloudy, with a low around 70. Southeast wind around 5 mph.
Thursday
A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 91. East southeast wind 5 to 10 mph becoming south in the afternoon.
Thursday Night
Mostly clear, with a low around 72. South wind around 5 mph.
Friday
Mostly sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 92.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 89.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 67.
Labor Day
Partly sunny, with a high near 86.
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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:
11:23 am CDT Sep 1, 2026
Forecast Valid:
12pm CDT Sep 1, 2026-6pm CDT Sep 7, 2026
 
Forecast Discussion
 
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Additional Resources

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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