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

30°F

-1°C

Humidity 64%
Wind Speed Calm
Barometer 29.55 in (1002.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 24 Feb 9:52 am CST
Extended Forecast for

Jefferson SD

  • Today

    Today: Increasing clouds, with a high near 52. Breezy, with a light northwest wind increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 52 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 22. North northwest wind 5 to 15 mph.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of snow after 1pm. Partly sunny, with a high near 39. North wind 5 to 10 mph becoming south southeast in the afternoon. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Partly Sunny
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before 9pm, then a chance of snow between 9pm and midnight. Mostly cloudy, with a low around 22. Southeast wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 30%.

    Low: 22 °F

    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 53. West wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31. South southwest wind 5 to 10 mph.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 52. Breezy, with a light northwest wind increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
Mostly cloudy, with a low around 22. North northwest wind 5 to 15 mph.
Wednesday
A 40 percent chance of snow after 1pm. Partly sunny, with a high near 39. North wind 5 to 10 mph becoming south southeast in the afternoon. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain and snow before 9pm, then a chance of snow between 9pm and midnight. Mostly cloudy, with a low around 22. Southeast wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 53. West wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 31. South southwest wind 5 to 10 mph.
Friday
Sunny, with a high near 63.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Mostly sunny, with a high near 38.
Saturday Night
A 20 percent chance of snow after midnight. Partly cloudy, with a low around 13.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 31.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 18.
Monday
A 20 percent chance of snow. Partly sunny, with a high near 40.
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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:
10:38 am CST Feb 24, 2026
Forecast Valid:
10am CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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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