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

63°F

17°C

Humidity 94%
Wind Speed N 5 mph
Barometer 30.14 in
Dewpoint 61°F (16°C)
Visibility 7.00 mi
Last update 27 Aug 8:15 am CDT
Extended Forecast for

Alton IA

  • Today

    Today: Patchy fog before 9am. Otherwise, sunny, with a high near 82. Calm wind becoming north northwest around 5 mph.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 82. South wind 5 to 15 mph.

    High: 82 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 86. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 86 °F

    Partly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 72. South wind around 10 mph.

    Low: 72 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, sunny, with a high near 82. Calm wind becoming north northwest around 5 mph.
Tonight
Mostly clear, with a low around 55. Calm wind.
Friday
Increasing clouds, with a high near 82. South wind 5 to 15 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Saturday
Partly sunny, with a high near 86. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Increasing clouds, with a low around 72. South wind around 10 mph.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Partly sunny, with a high near 86.
Monday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 64.
Tuesday
Partly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 42.98°N 96.01°W (Elev. 1283 ft)
Last Update:
6:23 am CDT Aug 27, 2026
Forecast Valid:
8am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation