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.

Overcast

34°F

1°C

Humidity 100%
Wind Speed NW 13 mph
Barometer 29.85 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 3 Dec 2:35 am CST
Extended Forecast for

Alton IA

  • Overnight

    Overnight: A slight chance of snow before 4am, then a chance of flurries after 4am. Cloudy, with a low around 13. North wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 13 °F

    Slight Chance
    Snow

  • Wednesday

    Wednesday: A chance of flurries before 7am. Mostly sunny, with a temperature falling to around 7 by 5pm. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 17 °F⇓

    Chance
    Flurries

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -10. North northwest wind around 5 mph becoming calm in the evening.

    Low: -10 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 19. Wind chill values as low as -23. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 19 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a steady temperature around 18. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 30. West southwest wind 5 to 10 mph.

    High: 30 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 24.

    High: 24 °F

    Cloudy then
    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 9.

    Low: 9 °F

    Chance Snow

Detailed Forecast

Overnight
A slight chance of snow before 4am, then a chance of flurries after 4am. Cloudy, with a low around 13. North wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday
A chance of flurries before 7am. Mostly sunny, with a temperature falling to around 7 by 5pm. North wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around -10. North northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 19. Wind chill values as low as -23. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Mostly cloudy, with a steady temperature around 18. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Friday
Mostly cloudy, with a high near 30. West southwest wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around 13.
Saturday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 24.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 9.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 18.
Sunday Night
Mostly cloudy, with a low around 8.
Monday
Mostly cloudy, with a high near 28.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Mostly cloudy, with a high near 33.
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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:
2:03 am CST Dec 3, 2025
Forecast Valid:
2am CST Dec 3, 2025-6pm CST Dec 9, 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