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.

Fog/Mist

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 30.05 in (1017.0 mb)
Dewpoint 63°F (17°C)
Visibility 4.00 mi
Last update 11 Aug 8:52 am CDT
Extended Forecast for

Jefferson SD

  • Today

    Today: Areas of smoke. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 82. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Areas
    Smoke

  • Tonight

    Tonight: Areas of smoke before 11pm. Partly cloudy, with a low around 62. South wind around 5 mph.

    Low: 62 °F

    Areas Smoke
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82. West southwest wind 5 to 10 mph becoming north northwest in the afternoon.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. North northwest wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Light southeast wind becoming south southeast 5 to 10 mph in the morning.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. South southeast wind around 10 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Today
Areas of smoke. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 82. Calm wind becoming south southwest around 5 mph in the afternoon.
Tonight
Areas of smoke before 11pm. Partly cloudy, with a low around 62. South wind around 5 mph.
Tuesday
Sunny, with a high near 82. West southwest wind 5 to 10 mph becoming north northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 58. North northwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 83. Light southeast wind becoming south southeast 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 68. South southeast wind around 10 mph.
Thursday
Sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jefferson SD
 42.61°N 96.56°W (Elev. 1125 ft)
Last Update:
6:28 am CDT Aug 11, 2025
Forecast Valid:
8am CDT Aug 11, 2025-6pm CDT Aug 17, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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