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

37°F

3°C

Humidity 93%
Wind Speed NW 14 G 20 mph
Barometer 29.68 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 2 Apr 5:55 pm CDT
Extended Forecast for

Alton IA

  • Tonight

    Tonight: Cloudy, with a low around 31. North northwest wind 5 to 10 mph becoming east northeast after midnight.

    Low: 31 °F

    Cloudy

  • Friday

    Friday: Showers and thunderstorms before 1pm, then showers between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 42. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 42 °F

    Showers

  • Friday Night

    Friday Night: Rain showers likely before 1am, then a slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Some thunder is also possible. Cloudy, with a low around 29. North wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 29 °F

    Showers
    Likely then
    Rain/Snow
    Likely

  • Saturday

    Saturday: A slight chance of snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 42. Breezy, with a west northwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 42 °F

    Breezy.
    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight.

    Low: 25 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 55. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Monday Night

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

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 31. North northwest wind 5 to 10 mph becoming east northeast after midnight.
Friday
Showers and thunderstorms before 1pm, then showers between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 42. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Rain showers likely before 1am, then a slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Some thunder is also possible. Cloudy, with a low around 29. North wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday
A slight chance of snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 42. Breezy, with a west northwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight.
Sunday
Sunny, with a high near 55. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Partly sunny, with a high near 47.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Partly sunny, with a high near 49. Breezy.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 70. Breezy.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 37.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 42.98°N 96.01°W (Elev. 1283 ft)
Last Update:
5:53 pm CDT Apr 2, 2026
Forecast Valid:
6pm CDT Apr 2, 2026-6pm CDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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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