National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Sioux City, Sioux Gateway Airport (KSUX)

Lat: 42.4°NLon: 96.38°WElev: 1099ft.

Overcast

56°F

13°C

Humidity 53%
Wind Speed E 3 mph
Barometer 30.26 in (1024.7 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 14 Oct 2:52 am CDT
Extended Forecast for

Jefferson SD

  • Overnight

    Overnight: A 20 percent chance of showers. Cloudy, with a steady temperature around 54. East northeast wind 5 to 10 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Showers likely, mainly after 9am. Cloudy, with a high near 57. East wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers, with thunderstorms also possible after 4am. Cloudy, with a low around 52. East wind around 5 mph. Chance of precipitation is 40%.

    Low: 52 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 74. East southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 80. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 80 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers. Cloudy, with a steady temperature around 54. East northeast wind 5 to 10 mph.
Tuesday
Showers likely, mainly after 9am. Cloudy, with a high near 57. East wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A chance of showers, with thunderstorms also possible after 4am. Cloudy, with a low around 52. East wind around 5 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 74. East southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 61. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 80. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 47.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 65.
Sunday Night
Clear, with a low around 43.
Monday
Sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jefferson SD
 42.61°N 96.56°W (Elev. 1125 ft)
Last Update:
2:53 am CDT Oct 14, 2025
Forecast Valid:
3am CDT Oct 14, 2025-6pm CDT Oct 20, 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