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

25°F

-4°C

Humidity 59%
Wind Speed Calm
Barometer 30.27 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 3 Feb 1:15 pm CST
Extended Forecast for

Alton IA

  • This Afternoon

    This Afternoon: A chance of snow before 2pm, then a chance of flurries after 2pm. Cloudy, with a high near 29. North northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

    High: 29 °F

    Chance Snow

  • Tonight

    Tonight: A chance of flurries between 2am and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 20. Calm wind becoming west northwest around 5 mph. Chance of precipitation is 20%.

    Low: 20 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: A chance of flurries before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 33. North northwest wind 5 to 15 mph.

    High: 33 °F

    Chance
    Flurries

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22. Northwest wind 5 to 10 mph becoming south southwest after midnight.

    Low: 22 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 48. South southwest wind 10 to 15 mph becoming west northwest in the morning. Winds could gust as high as 20 mph.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. West northwest wind around 10 mph.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of snow before 2pm, then a chance of flurries after 2pm. Cloudy, with a high near 29. North northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Tonight
A chance of flurries between 2am and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 20. Calm wind becoming west northwest around 5 mph. Chance of precipitation is 20%.
Wednesday
A chance of flurries before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 33. North northwest wind 5 to 15 mph.
Wednesday Night
Mostly cloudy, with a low around 22. Northwest wind 5 to 10 mph becoming south southwest after midnight.
Thursday
Mostly sunny, with a high near 48. South southwest wind 10 to 15 mph becoming west northwest in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 32. West northwest wind around 10 mph.
Friday
Mostly sunny, with a high near 42.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 49.
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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:
12:43 pm CST Feb 3, 2026
Forecast Valid:
1pm CST Feb 3, 2026-6pm CST Feb 9, 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