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.

Mostly Cloudy

81°F

27°C

Humidity 67%
Wind Speed NE 14 G 22 mph
Barometer 29.87 in (1010.8 mb)
Dewpoint 69°F (21°C)
Visibility 9.00 mi
Heat Index84°F (29°C)
Last update 13 Aug 3:52 pm CDT
Extended Forecast for

Sioux City IA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 66. East northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 66 °F

    Slight Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 1pm, then showers likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 78. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm.

    Low: 66 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Calm wind becoming northwest around 5 mph.

    High: 81 °F

    Cloudy then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North northwest wind around 5 mph becoming calm.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 66. East northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers and thunderstorms likely, mainly before 1pm, then showers likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 78. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm.
Saturday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Calm wind becoming northwest around 5 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North northwest wind around 5 mph becoming calm.
Sunday
Partly sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 59.
Monday
Mostly sunny, with a high near 78.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Wednesday
Mostly cloudy, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
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:
2:23 pm CDT Aug 13, 2026
Forecast Valid:
4pm CDT Aug 13, 2026-6pm CDT Aug 20, 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