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

84°F

29°C

Humidity 25%
Wind Speed SW 18 mph
Barometer 29.84 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 12 Jun 5:55 pm CDT
Extended Forecast for

Alton IA

  • Tonight

    Tonight: Mostly clear, with a low around 61. South wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers or sprinkles before noon, then a chance of sprinkles between noon and 3pm. Mostly sunny, with a high near 78. West southwest wind 5 to 10 mph becoming north northwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. Northwest wind 5 to 10 mph becoming light in the evening.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 79. Light west wind becoming west northwest 5 to 10 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    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 57.

    Low: 57 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 61. South wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
A chance of showers or sprinkles before noon, then a chance of sprinkles between noon and 3pm. Mostly sunny, with a high near 78. West southwest wind 5 to 10 mph becoming north northwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 50. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 75. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 48. Northwest wind 5 to 10 mph becoming light in the evening.
Monday
Mostly sunny, with a high near 79. Light west wind becoming west northwest 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 57.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 54. Breezy.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 55.
Juneteenth
Mostly sunny, with a high near 84.
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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:
4:48 pm CDT Jun 12, 2026
Forecast Valid:
6pm CDT Jun 12, 2026-6pm CDT Jun 19, 2026
 
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