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.

A Few Clouds

50°F

10°C

Humidity 37%
Wind Speed E 15 G 22 mph
Barometer 30.09 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 20 Apr 11:15 am CDT
Extended Forecast for

Alton IA

  • Today

    Today: Showers likely, mainly after 4pm. Cloudy, with a high near 52. East northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely, mainly before 9pm. Cloudy, with a low around 37. Northeast wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Showers
    Likely

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 68. Northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 68 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: A chance of showers before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Increasing clouds, with a low around 46. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 46 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Partly sunny, then gradually becoming sunny, with a high near 72. South southeast wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44. West northwest wind 5 to 10 mph becoming northeast after midnight.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 74.

    High: 74 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely

Detailed Forecast

Today
Showers likely, mainly after 4pm. Cloudy, with a high near 52. East northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Showers likely, mainly before 9pm. Cloudy, with a low around 37. Northeast wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 68. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
Monday Night
A chance of showers before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Increasing clouds, with a low around 46. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Tuesday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Partly sunny, then gradually becoming sunny, with a high near 72. South southeast wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 44. West northwest wind 5 to 10 mph becoming northeast after midnight.
Wednesday
A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 74.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 42.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 65.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 42.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 42.98°N 96.01°W (Elev. 1283 ft)
Last Update:
10:30 am CDT Apr 20, 2025
Forecast Valid:
11am CDT Apr 20, 2025-6pm CDT Apr 26, 2025
 
Forecast Discussion
 
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Additional Resources

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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