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

56°F

13°C

Humidity 100%
Wind Speed W 5 mph
Barometer 29.82 in (1009.3 mb)
Dewpoint 56°F (13°C)
Visibility 2.50 mi
Last update 18 Jun 1:52 am CDT
Extended Forecast for

Sioux City IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 61. North wind around 5 mph.

    Low: 61 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly between 9am and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. North northwest wind 5 to 10 mph.

    High: 81 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. North northwest wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 90. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 71. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny and hot, with a high near 98. Breezy, with a south wind 10 to 20 mph, with gusts as high as 35 mph.

    High: 98 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 61. North wind around 5 mph.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly between 9am and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. North northwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 59. North northwest wind around 5 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 90. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 71. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Sunny and hot, with a high near 98. Breezy, with a south wind 10 to 20 mph, with gusts as high as 35 mph.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny and hot, with a high near 99.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny and hot, with a high near 98. Breezy.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 71.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
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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:
10:31 pm CDT Jun 17, 2025
Forecast Valid:
2am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
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