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 22%
Wind Speed N 12 G 25 mph
Barometer 29.72 in (1005.4 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 15 May 10:52 pm CDT
Extended Forecast for

Sergeant Bluff IA

  • Tonight

    Tonight: Mostly clear, with a low around 56. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86. North northeast wind 5 to 15 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 55. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 89. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.

    High: 89 °F

    Breezy.
    Chance
    T-storms then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms, mainly before 1am. Some of the storms could be severe. Low around 54. Breezy, with a south wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    Low: 54 °F

    Severe
    Thunderstorms
    and Breezy

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 78. Breezy, with a north northwest wind 10 to 20 mph becoming east southeast in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    High: 78 °F

    Chance
    Showers then
    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 43. Breezy. Chance of precipitation is 60%.

    Low: 43 °F

    Showers
    Likely and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. Breezy.

    High: 61 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 86. North northeast wind 5 to 15 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 55. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely, mainly after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 89. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms, mainly before 1am. Some of the storms could be severe. Low around 54. Breezy, with a south wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 78. Breezy, with a north northwest wind 10 to 20 mph becoming east southeast in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Monday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 43. Breezy. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 61. Breezy.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Partly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sergeant Bluff IA
 42.41°N 96.35°W (Elev. 1194 ft)
Last Update:
10:08 pm CDT May 15, 2026
Forecast Valid:
10pm CDT May 15, 2026-6pm CDT May 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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