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

37°F

3°C

Humidity 89%
Wind Speed N 6 mph
Barometer 30.09 in (1019.5 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 21 Nov 2:52 am CST
Extended Forecast for

Jefferson SD

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 31. North northeast wind around 5 mph becoming calm.

    Low: 31 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 49. Calm wind.

    High: 49 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. Calm wind becoming south around 5 mph in the evening.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61. South wind 5 to 10 mph becoming west northwest in the afternoon.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Northwest wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. Calm wind becoming south around 5 mph in the morning.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: Rain likely, mainly before noon. Cloudy, with a high near 54. Chance of precipitation is 70%.

    High: 54 °F

    Rain Likely

  • Monday Night

    Monday Night: A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 31. North northeast wind around 5 mph becoming calm.
Friday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 49. Calm wind.
Friday Night
Partly cloudy, with a low around 31. Calm wind becoming south around 5 mph in the evening.
Saturday
Sunny, with a high near 61. South wind 5 to 10 mph becoming west northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 30. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 59. Calm wind becoming south around 5 mph in the morning.
Sunday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 41.
Monday
Rain likely, mainly before noon. Cloudy, with a high near 54. Chance of precipitation is 70%.
Monday Night
A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 35.
Tuesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 44. Breezy.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 35.
Wednesday Night
Partly cloudy, with a low around 18.
Thanksgiving Day
Mostly sunny, with a high near 33.
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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:
2:48 am CST Nov 21, 2025
Forecast Valid:
2am CST Nov 21, 2025-6pm CST Nov 27, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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