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Current conditions at

Sioux County Regional Airport (KSXK)

Lat: 42.99°NLon: 96.16°WElev: 1409ft.

A Few Clouds

55°F

13°C

Humidity 63%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 8 Oct 1:15 am CDT
Extended Forecast for

Alton IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 72. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 72 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly between 10pm and 3am. Partly cloudy, with a low around 55. Southeast wind around 5 mph.

    Low: 55 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 79. South wind 5 to 15 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 64. Breezy, with a south wind 10 to 20 mph, with gusts as high as 25 mph.

    Low: 64 °F

    Clear then
    Clear and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 82. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 82 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 64. Breezy.

    Low: 64 °F

    Clear and
    Breezy then
    Clear

  • Sunday

    Sunday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 51. Calm wind.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 72. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly between 10pm and 3am. Partly cloudy, with a low around 55. Southeast wind around 5 mph.
Friday
Sunny, with a high near 79. South wind 5 to 15 mph.
Friday Night
Clear, with a low around 64. Breezy, with a south wind 10 to 20 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 82. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Saturday Night
Clear, with a low around 64. Breezy.
Sunday
Sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 54.
Columbus Day
Partly sunny, with a high near 63.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 45.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 42.98°N 96.04°W (Elev. 1362 ft)
Last Update:
12:28 am CDT Oct 8, 2026
Forecast Valid:
1am CDT Oct 8, 2026-6pm CDT Oct 14, 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