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.

Fair

68°F

20°C

Humidity 88%
Wind Speed S 8 G 22 mph
Barometer 29.98 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 15 Jun 10:35 am CDT
Extended Forecast for

Alton IA

  • Today

    Today: Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. South southeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    Heavy Rain

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. Southeast wind 5 to 10 mph.

    Low: 65 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm after 10pm. Mostly cloudy, with a low around 63. West southwest wind 5 to 10 mph becoming south in the evening. Chance of precipitation is 70%.

    Low: 63 °F

    T-storms
    Likely then
    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Northeast wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 80 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. North northeast wind 5 to 10 mph.

    Low: 59 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers. Mostly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. South southeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. Southeast wind 5 to 10 mph.
Monday
A slight chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Monday Night
Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm after 10pm. Mostly cloudy, with a low around 63. West southwest wind 5 to 10 mph becoming south in the evening. Chance of precipitation is 70%.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Northeast wind 5 to 10 mph. Chance of precipitation is 70%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. North northeast wind 5 to 10 mph.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 57.
Juneteenth
Sunny, with a high near 85.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 65.
Friday
Sunny, with a high near 92. Breezy.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny, with a high near 93. Breezy.
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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:
9:47 am CDT Jun 15, 2025
Forecast Valid:
10am CDT Jun 15, 2025-6pm CDT Jun 21, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation