National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Sioux County Regional Airport (KSXK)

Lat: 42.99°NLon: 96.16°WElev: 1409ft.

Fair

68°F

20°C

Humidity 35%
Wind Speed NW 7 G 18 mph
Barometer 30.33 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 4 Oct 12:55 pm CDT
Extended Forecast for

Alton IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 71. Northwest wind around 5 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 46. Calm wind.

    Low: 46 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. Light southeast wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 56. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. South southwest wind 5 to 10 mph becoming west northwest in the afternoon.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. Northwest wind around 5 mph becoming calm.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 71. Northwest wind around 5 mph.
Tonight
Clear, with a low around 46. Calm wind.
Monday
Sunny, with a high near 72. Light southeast wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Clear, with a low around 56. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 78. South southwest wind 5 to 10 mph becoming west northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 55. Northwest wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 75. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton IA
 43°N 96.01°W (Elev. 1289 ft)
Last Update:
11:53 am CDT Oct 4, 2026
Forecast Valid:
1pm CDT Oct 4, 2026-6pm CDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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