National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sioux County Regional Airport (KSXK)

Lat: 42.99°NLon: 96.16°WElev: 1409ft.

Fair

75°F

24°C

Humidity 94%
Wind Speed E 13 mph
Barometer 29.96 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 17 Aug 9:15 am CDT
Extended Forecast for

5 Miles SSW Alton IA

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 102. South wind 10 to 15 mph.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 69. South wind 5 to 10 mph.

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing, with a high near 89. South southwest wind around 5 mph becoming west in the afternoon.

    High: 89 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 66. North northeast wind around 5 mph.

    Low: 66 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84. North northeast wind around 5 mph.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. Northeast wind around 5 mph becoming calm after midnight.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 102. South wind 10 to 15 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 69. South wind 5 to 10 mph.
Monday
Cloudy through mid morning, then gradual clearing, with a high near 89. South southwest wind around 5 mph becoming west in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 66. North northeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 84. North northeast wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 61. Northeast wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 61.
Friday
Mostly sunny, with a high near 84.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Alton IA
 42.94°N 96.07°W (Elev. 1299 ft)
Last Update:
8:56 am CDT Aug 17, 2025
Forecast Valid:
9am CDT Aug 17, 2025-6pm CDT Aug 23, 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