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

Sioux County Regional Airport (KSXK)

Lat: 42.99°NLon: 96.16°WElev: 1409ft.

Fair

61°F

16°C

Humidity 34%
Wind Speed W 20 G 30 mph
Barometer 30.22 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 5 Apr 3:15 pm CDT
Extended Forecast for

Alton IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 63. Breezy, with a west northwest wind around 20 mph, with gusts as high as 30 mph.

    High: 63 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Blustery, with a north wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 30 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Monday

    Monday: A 20 percent chance of snow showers between 1pm and 2pm. Partly sunny, with a high near 43. North wind 10 to 15 mph.

    High: 43 °F

    Slight Chance
    Snow Showers

  • Monday Night

    Monday Night: A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 22. East wind around 10 mph.

    Low: 22 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of snow showers, mainly after 1pm. Mostly cloudy, with a high near 39. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.

    High: 39 °F

    Chance Snow
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 31. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 31 °F

    Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A 30 percent chance of showers. Partly sunny, with a high near 65. Breezy.

    High: 65 °F

    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of rain and snow showers before 1pm, then a chance of rain showers. Mostly sunny, with a high near 56. Chance of precipitation is 30%.

    High: 56 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 63. Breezy, with a west northwest wind around 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, with a low around 30. Blustery, with a north wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Monday
A 20 percent chance of snow showers between 1pm and 2pm. Partly sunny, with a high near 43. North wind 10 to 15 mph.
Monday Night
A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 22. East wind around 10 mph.
Tuesday
A 40 percent chance of snow showers, mainly after 1pm. Mostly cloudy, with a high near 39. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.
Tuesday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 31. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 65. Breezy.
Wednesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 34.
Thursday
A chance of rain and snow showers before 1pm, then a chance of rain showers. Mostly sunny, with a high near 56. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 32.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 58.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 40.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 42.98°N 96.04°W (Elev. 1362 ft)
Last Update:
2:23 pm CDT Apr 5, 2026
Forecast Valid:
3pm CDT Apr 5, 2026-6pm CDT Apr 11, 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