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.

Light Rain

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 29.83 in (1009.4 mb)
Dewpoint 66°F (19°C)
Visibility 7.00 mi
Last update 16 Jul 1:52 am CDT
Extended Forecast for

Jefferson SD

  • Overnight

    Overnight: Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 66. West wind 5 to 10 mph becoming north. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76. North northwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly before 7pm. Mostly cloudy, with a low around 55. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 74. North wind 5 to 10 mph becoming east northeast in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. East wind around 5 mph.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. South southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 66. West wind 5 to 10 mph becoming north. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76. North northwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday Night
A 30 percent chance of showers, mainly before 7pm. Mostly cloudy, with a low around 55. North wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 74. North wind 5 to 10 mph becoming east northeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 57. East wind around 5 mph.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. South southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 86.
Saturday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 65.
Sunday
Partly sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Mostly sunny, with a high near 91.
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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:
12:07 am CDT Jul 16, 2025
Forecast Valid:
1am CDT Jul 16, 2025-6pm CDT Jul 22, 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