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 and Breezy

85°F

29°C

Humidity 59%
Wind Speed S 21 G 41 mph
Barometer 29.53 in (998.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 21 Jun 1:52 am CDT
Extended Forecast for

Sloan IA

Extreme Heat Warning June 21, 02:28am until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 21, 02:28am until June 22, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Overnight

    Low: 78 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 103. Heat index values as high as 110. Windy, with a south southwest wind 20 to 30 mph, with gusts as high as 40 mph.

    High: 103 °F

    Hot and Windy

  • Saturday Night

    Saturday Night: Clear, with a low around 78. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.

    Low: 78 °F

    Clear and
    Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Heat index values as high as 104. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph.

    High: 100 °F

    Hot and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 71 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. West wind around 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    High: 85 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.

    Low: 63 °F

    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.

    High: 81 °F

    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 78. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Saturday
Sunny and hot, with a high near 103. Heat index values as high as 110. Windy, with a south southwest wind 20 to 30 mph, with gusts as high as 40 mph.
Saturday Night
Clear, with a low around 78. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Sunday
Sunny and hot, with a high near 100. Heat index values as high as 104. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph.
Monday
A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. West wind around 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Monday Night
Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.
Tuesday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 83. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Friday
Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sloan IA
 42.24°N 96.23°W (Elev. 1070 ft)
Last Update:
11:05 pm CDT Jun 20, 2025
Forecast Valid:
2am CDT Jun 21, 2025-6pm CDT Jun 27, 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