Current conditions at

Sioux City, Sioux Gateway Airport (KSUX)

Lat: 42.4°NLon: 96.38°WElev: 1099ft.

Mostly Cloudy and Breezy

85°F

29°C

Humidity 51%
Wind Speed S 22 G 38 mph
Barometer 29.49 in (997.6 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 17 May 4:52 pm CDT
Extended Forecast for

Sioux City IA

Tornado Watch May 17, 05:13pm until May 17, 10:00pm
Click here for hazard details and duration
Tornado Watch
  •  
    Tornado Watch May 17, 05:13pm until May 17, 10:00pm

    NOW until 10:00pm Sun

    Tornado Watch

  • This Afternoon

    High: 84 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then a slight chance of showers. Some of the storms could be severe.  Low around 49. South wind around 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 49 °F

    Severe
    Thunderstorms
    then Chance
    T-storms

  • Monday

    Monday: A slight chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 5pm, then showers likely and possibly a thunderstorm after 5pm.  Cloudy, with a high near 63. North northeast wind around 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers.  Low around 41. North northwest wind 10 to 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%.

    Low: 41 °F

    Showers

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 59. Northwest wind around 15 mph, with gusts as high as 30 mph.

    High: 59 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. North northwest wind 5 to 10 mph becoming light north northeast  in the evening. Winds could gust as high as 20 mph.

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Some of the storms could be severe. Mostly sunny, with a steady temperature around 84. South wind around 15 mph, with gusts as high as 30 mph.
Tonight
Showers and thunderstorms before 4am, then a slight chance of showers. Some of the storms could be severe. Low around 49. South wind around 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
A slight chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 5pm, then showers likely and possibly a thunderstorm after 5pm. Cloudy, with a high near 63. North northeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 41. North northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 59. Northwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 36. North northwest wind 5 to 10 mph becoming light north northeast in the evening. Winds could gust as high as 20 mph.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
Mostly cloudy, with a high near 66.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 71.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 49.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.39°W (Elev. 1099 ft)
1:56 pm CDT May 17, 2026
5pm CDT May 17, 2026-6pm CDT May 24, 2026
 
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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