National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
News Headlines
Current conditions at

Sioux County Regional Airport (KSXK)

Lat: 42.99°NLon: 96.16°WElev: 1409ft.

Mostly Cloudy

61°F

16°C

Humidity 55%
Wind Speed N 8 mph
Barometer 29.89 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 7 Oct 1:55 am CDT
Extended Forecast for

Alton IA

  • Overnight

    Overnight: Mostly clear, with a low around 51. North wind around 5 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76. North wind 5 to 10 mph.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. West northwest wind around 5 mph becoming calm.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 71. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 54. Southeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 78. South wind 5 to 10 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Breezy.

    High: 81 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. Breezy.

    Low: 63 °F

    Clear and
    Breezy then
    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 51. North wind around 5 mph.
Wednesday
Sunny, with a high near 76. North wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 50. West northwest wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 71. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
A slight chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 54. Southeast wind around 5 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 78. South wind 5 to 10 mph.
Friday Night
Clear, with a low around 63.
Saturday
Sunny, with a high near 81. Breezy.
Saturday Night
Mostly clear, with a low around 63. Breezy.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly cloudy, with a low around 57.
Columbus Day
Partly sunny, with a high near 68.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 49.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 43°N 96.01°W (Elev. 1289 ft)
Last Update:
1:38 am CDT Oct 7, 2026
Forecast Valid:
2am CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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