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.

Overcast

50°F

10°C

Humidity 93%
Wind Speed NW 15 mph
Barometer 29.91 in (1013.0 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 19 May 12:52 am CDT
Extended Forecast for

Sioux City IA

  • Overnight

    Overnight: A 20 percent chance of showers before 2am. Cloudy, with a low around 43. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 43 °F

    Slight Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 58. Northwest wind around 15 mph, with gusts as high as 30 mph.

    High: 58 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. North northwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy frost before 7am. Otherwise, increasing clouds, with a high near 61. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 61 °F

    Patchy Frost
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Southeast wind around 5 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 61. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 61 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.

    Low: 45 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 20 percent chance of showers before 2am. Cloudy, with a low around 43. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 58. Northwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 36. North northwest wind 5 to 10 mph becoming light and variable in the evening.
Wednesday
Patchy frost before 7am. Otherwise, increasing clouds, with a high near 61. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42. Southeast wind around 5 mph.
Thursday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 61. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 43.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 55.
Memorial Day
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sioux City IA
 42.5°N 96.36°W (Elev. 1293 ft)
Last Update:
12:38 am CDT May 19, 2026
Forecast Valid:
1am CDT May 19, 2026-6pm CDT May 25, 2026
 
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