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.

Overcast

59°F

15°C

Humidity 96%
Wind Speed SE 9 mph
Barometer 29.84 in (1010.4 mb)
Dewpoint 58°F (14°C)
Visibility 8.00 mi
Last update 22 May 1:52 pm CDT
Extended Forecast for

Sioux City IA

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms, mainly between 3pm and 5pm. High near 67. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Showers

  • Tonight

    Tonight: A chance of sprinkles before 9pm. Partly cloudy, with a low around 46. South southwest wind around 5 mph.

    Low: 46 °F

    Chance
    Sprinkles

  • Saturday

    Saturday: Mostly sunny, with a high near 73. West northwest wind around 5 mph.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers between 9pm and 10pm. Partly cloudy, with a low around 48. Calm wind becoming southeast around 5 mph. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 81. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 81 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly clear, with a low around 56. South wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    T-storms then
    Chance
    Showers

  • Memorial Day

    Memorial Day: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Monday Night

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

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms, mainly between 3pm and 5pm. High near 67. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of sprinkles before 9pm. Partly cloudy, with a low around 46. South southwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 73. West northwest wind around 5 mph.
Saturday Night
A chance of showers between 9pm and 10pm. Partly cloudy, with a low around 48. Calm wind becoming southeast around 5 mph. Chance of precipitation is 30%.
Sunday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 81. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly clear, with a low around 56. South wind 5 to 10 mph. Chance of precipitation is 30%.
Memorial Day
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.39°W (Elev. 1099 ft)
Last Update:
1:32 pm CDT May 22, 2026
Forecast Valid:
2pm CDT May 22, 2026-6pm CDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation