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

89°F

32°C

Humidity 52%
Wind Speed SW 20 G 32 mph
Barometer 29.54 in (998.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 21 Jun 10:52 am CDT
Extended Forecast for

South Sioux City NE

Extreme Heat Warning June 21, 11:52am until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 21, 11:52am until June 22, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Today

    High: 103 °F

    Hot and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 79. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph.

    Low: 79 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 102. Heat index values as high as 108. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 102 °F

    Hot and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 69 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 83 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. East northeast wind 5 to 10 mph. Chance of precipitation is 70%.

    Low: 63 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.

    High: 81 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 103. Heat index values as high as 110. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 35 mph.
Tonight
Mostly clear, with a low around 79. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph.
Sunday
Sunny and hot, with a high near 102. Heat index values as high as 108. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. North wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. East northeast wind 5 to 10 mph. Chance of precipitation is 70%.
Tuesday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.
Tuesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 66. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Sioux City NE
 42.46°N 96.41°W (Elev. 1102 ft)
Last Update:
10:46 am CDT Jun 21, 2025
Forecast Valid:
11am CDT Jun 21, 2025-6pm CDT Jun 27, 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