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

76°F

24°C

Humidity 94%
Wind Speed E 6 mph
Barometer 29.80 in (1008.1 mb)
Dewpoint 74°F (23°C)
Visibility 8.00 mi
Heat Index76°F (24°C)
Last update 12 Aug 3:52 am CDT
Extended Forecast for

South Sioux City NE

Severe T-storm Watch August 12, 04:44am until August 12, 10:00am
Severe T-storm Warning August 12, 04:44am until August 12, 05:15am
Click here for hazard details and duration
Severe T-storm Watch
Severe T-storm Warning
  •  
    Severe T-storm Watch August 12, 04:44am until August 12, 10:00am
    Severe T-storm Warning August 12, 04:44am until August 12, 05:15am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 71 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms before 8am. Some of the storms could be severe. Patchy smoke after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 88. Northeast wind 5 to 10 mph.

    High: 88 °F

    Severe
    Thunderstorms
    then Patchy
    Smoke

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after midnight. Some of the storms could produce heavy rainfall. Patchy smoke. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 68. East wind 5 to 10 mph.

    Low: 68 °F

    Slight Chance
    T-storms then
    Heavy Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 3pm. Some of the storms could produce heavy rainfall. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 79. Northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 79 °F

    Heavy Rain
    and Patchy
    Fog then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 64. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms before 1pm. Cloudy, with a high near 79. East southeast wind around 10 mph.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Overnight
Showers and thunderstorms likely, mainly after 5am. Some of the storms could be severe. Patchy fog after 5am. Otherwise, cloudy, with a low around 71. East northeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of showers and thunderstorms before 8am. Some of the storms could be severe. Patchy smoke after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 88. Northeast wind 5 to 10 mph.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly after midnight. Some of the storms could produce heavy rainfall. Patchy smoke. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 68. East wind 5 to 10 mph.
Thursday
Showers and thunderstorms likely, mainly before 3pm. Some of the storms could produce heavy rainfall. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 79. Northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday Night
A slight chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 64. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms before 1pm. Cloudy, with a high near 79. East southeast wind around 10 mph.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Sunday
Mostly cloudy, with a high near 76.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Partly sunny, with a high near 75.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Sioux City NE
 42.48°N 96.41°W (Elev. 1093 ft)
Last Update:
4:08 am CDT Aug 12, 2026
Forecast Valid:
4am CDT Aug 12, 2026-6pm CDT Aug 18, 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