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

71°F

22°C

Humidity 73%
Wind Speed S 13 G 23 mph
Barometer 29.88 in (1011.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 4 Oct 4:52 am CDT
Extended Forecast for

Jefferson SD

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 91. Breezy, with a south wind 15 to 20 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 91 °F

    Becoming
    Sunny and
    Breezy

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 68. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.

    Low: 68 °F

    Breezy.
    Mostly Clear
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 85. Breezy, with a south wind 15 to 20 mph becoming west southwest in the afternoon. Winds could gust as high as 35 mph.

    High: 85 °F

    Decreasing
    Clouds and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 63. North wind 5 to 10 mph.

    High: 63 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. Northeast wind around 5 mph becoming calm in the evening.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 91. Breezy, with a south wind 15 to 20 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 68. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 85. Breezy, with a south wind 15 to 20 mph becoming west southwest in the afternoon. Winds could gust as high as 35 mph.
Sunday Night
Mostly clear, with a low around 48. North wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 63. North wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 43. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Clear, with a low around 42.
Wednesday
Sunny, with a high near 70.
Wednesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jefferson SD
 42.61°N 96.56°W (Elev. 1125 ft)
Last Update:
4:18 am CDT Oct 4, 2025
Forecast Valid:
5am CDT Oct 4, 2025-6pm CDT Oct 10, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation