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

89°F

32°C

Humidity 52%
Wind Speed SW 20 G 32 mph
Barometer 29.54 in (998.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 21 Jun 10:52 am CDT
Extended Forecast for

Sloan IA

Extreme Heat Warning June 21, 11:28am until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 21, 11:28am until June 22, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Today

    High: 103 °F

    Hot and
    Breezy

  • Tonight

    Tonight: Mostly 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

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 101. Heat index values as high as 106. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph.

    High: 101 °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 25 mph, with gusts as high as 35 mph.

    Low: 71 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. West northwest wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    High: 84 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 63. Northeast wind 5 to 10 mph. Chance of precipitation is 80%.

    Low: 63 °F

    Chance
    T-storms then
    T-storms

  • Tuesday

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

    High: 81 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 103. Heat index values as high as 110. Breezy, with a south southwest wind around 25 mph, with gusts as high as 40 mph.
Tonight
Mostly 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 101. Heat index values as high as 106. 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 25 mph, with gusts as high as 35 mph.
Monday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. West northwest wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 63. Northeast wind 5 to 10 mph. Chance of precipitation is 80%.
Tuesday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.
Tuesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 66. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 85. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sloan IA
 42.24°N 96.23°W (Elev. 1070 ft)
Last Update:
10:46 am CDT Jun 21, 2025
Forecast Valid:
11am 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