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.

A Few Clouds

66°F

19°C

Humidity 88%
Wind Speed S 16 G 25 mph
Barometer 30.08 in
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Last update 3 Aug 11:35 am CDT
Extended Forecast for

Alton IA

  • Today

    Today: Showers likely, mainly before noon. Areas of smoke before 2pm. Cloudy, with a high near 74. South wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 59. South southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 77. South southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 60. South southeast wind 5 to 10 mph. Chance of precipitation is 10%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Today
Showers likely, mainly before noon. Areas of smoke before 2pm. Cloudy, with a high near 74. South wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 59. South southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Monday
A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 77. South southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 60. South southeast wind 5 to 10 mph. Chance of precipitation is 10%.
Tuesday
Mostly sunny, with a high near 80. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. South southeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 71.
Friday
Mostly sunny, with a high near 90.
Friday Night
Partly cloudy, with a low around 70.
Saturday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 42.98°N 96.01°W (Elev. 1283 ft)
Last Update:
11:46 am CDT Aug 3, 2025
Forecast Valid:
11am CDT Aug 3, 2025-6pm CDT Aug 9, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation