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 and Breezy

98°F

37°C

Humidity 39%
Wind Speed S 22 G 38 mph
Barometer 29.54 in (999.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 21 Jun 3:52 pm CDT
Extended Forecast for

4 Miles NE Hornick IA

Extreme Heat Warning June 21, 04:51pm until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 21, 04:51pm until June 22, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Tonight

    Low: 79 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Heat index values as high as 106. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph.

    High: 100 °F

    Hot and
    Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 71 °F

    Breezy.
    Mostly Clear
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 82. West wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    High: 82 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 64. East northeast wind 5 to 10 mph. Chance of precipitation is 90%.

    Low: 64 °F

    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 81. East wind 5 to 10 mph becoming south southeast in the afternoon. 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 90%.

    Low: 66 °F

    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 85. Chance of precipitation is 80%.

    High: 85 °F

    Chance
    T-storms then
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 79. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph.
Sunday
Sunny and hot, with a high near 100. Heat index values as high as 106. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph.
Monday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 82. West wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm. Low around 64. East northeast wind 5 to 10 mph. Chance of precipitation is 90%.
Tuesday
Showers and possibly a thunderstorm. High near 81. East wind 5 to 10 mph becoming south southeast in the afternoon. 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 90%.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 85. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Hornick IA
 42.26°N 96.06°W (Elev. 1070 ft)
Last Update:
4:46 pm CDT Jun 21, 2025
Forecast Valid:
4pm CDT Jun 21, 2025-6pm CDT Jun 28, 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