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.

Light Rain

66°F

19°C

Humidity 100%
Wind Speed NW 8 mph
Barometer 29.80 in
Dewpoint 66°F (19°C)
Visibility 6.00 mi
Last update 16 Jul 2:55 am CDT
Extended Forecast for

Alton IA

  • Overnight

    Overnight: Showers and thunderstorms likely, mainly before 4am. Cloudy, with a low around 65. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 74. North wind 5 to 15 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 53. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 73. East northeast wind around 10 mph.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. East southeast wind around 5 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 79 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    T-storms
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers and thunderstorms likely, mainly before 4am. Cloudy, with a low around 65. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 74. North wind 5 to 15 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 53. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 73. East northeast wind around 10 mph.
Thursday Night
Mostly clear, with a low around 54. East southeast wind around 5 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Partly sunny, with a high near 81.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Monday
Partly sunny, with a high near 84.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 67.
Tuesday
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:
12:07 am CDT Jul 16, 2025
Forecast Valid:
3am CDT Jul 16, 2025-6pm CDT Jul 22, 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