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

82°F

28°C

Humidity 82%
Wind Speed E 3 mph
Barometer 29.86 in (1010.1 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 26 Jul 8:52 am CDT
Extended Forecast for

North Sioux City SD

Extreme Heat Warning July 26, 09:22am until July 26, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 26, 09:22am until July 26, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Today

    High: 98 °F

    Hot

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 8pm and 1am. Partly cloudy, with a low around 77. South wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Patchy smoke between 10am and 2pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 102. North northeast wind 5 to 10 mph.

    High: 97 °F

    Patchy Smoke

  • Monday Night

    Monday Night: Increasing clouds, with a low around 73. East northeast wind around 5 mph becoming calm after midnight.

    Low: 73 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 91. Calm wind becoming east southeast around 5 mph.

    High: 91 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. Southeast wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly sunny and hot, with a high near 98. Heat index values as high as 114. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
A slight chance of showers and thunderstorms between 8pm and 1am. Partly cloudy, with a low around 77. South wind 5 to 10 mph. Chance of precipitation is 20%.
Monday
Patchy smoke between 10am and 2pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 102. North northeast wind 5 to 10 mph.
Monday Night
Increasing clouds, with a low around 73. East northeast wind around 5 mph becoming calm after midnight.
Tuesday
Partly sunny, with a high near 91. Calm wind becoming east southeast around 5 mph.
Tuesday Night
Partly cloudy, with a low around 70. Southeast wind around 5 mph.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 88.
Thursday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 67.
Saturday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
North Sioux City SD
 42.54°N 96.5°W (Elev. 1099 ft)
Last Update:
8:33 am CDT Jul 26, 2026
Forecast Valid:
9am CDT Jul 26, 2026-6pm CDT Aug 1, 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