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.

Partly Cloudy

73°F

23°C

Humidity 78%
Wind Speed NW 18 mph
Barometer 29.86 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 18 Jun 1:35 pm CDT
Extended Forecast for

Alton IA

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 79. North wind around 10 mph.

    High: 79 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 58. North northwest wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 89. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: Sunny and hot, with a high near 97. Breezy, with a south wind 15 to 25 mph, with gusts as high as 30 mph.

    High: 97 °F

    Hot and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph.

    Low: 75 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Breezy.

    High: 99 °F

    Hot and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Breezy.

    Low: 77 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 98. Breezy.

    High: 98 °F

    Hot and
    Breezy

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 79. North wind around 10 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 58. North northwest wind around 5 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 89. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Sunny and hot, with a high near 97. Breezy, with a south wind 15 to 25 mph, with gusts as high as 30 mph.
Friday Night
Mostly clear, with a low around 75. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph.
Saturday
Sunny and hot, with a high near 99. Breezy.
Saturday Night
Mostly clear, with a low around 77. Breezy.
Sunday
Sunny and hot, with a high near 98. Breezy.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Monday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 42.98°N 96.01°W (Elev. 1283 ft)
Last Update:
1:46 pm CDT Jun 18, 2025
Forecast Valid:
1pm CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

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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