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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

29°F

-2°C

Humidity 61%
Wind Speed NA
Barometer 30.32 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 10 Nov 3:35 am CST
Extended Forecast for

3 Miles WNW Alton IL

  • Overnight

    Overnight: Scattered flurries before 4am. Mostly cloudy, with a low around 24. Northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Scattered
    Flurries

  • Monday

    Monday: Sunny, with a high near 38. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 24. West wind 5 to 8 mph becoming south after midnight.

    Low: 24 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: Mostly cloudy, then gradually becoming sunny, with a high near 56. South wind 9 to 15 mph, with gusts as high as 25 mph.

    High: 56 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38. West wind 7 to 10 mph.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
Scattered flurries before 4am. Mostly cloudy, with a low around 24. Northwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 38. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Monday Night
Increasing clouds, with a low around 24. West wind 5 to 8 mph becoming south after midnight.
Veterans Day
Mostly cloudy, then gradually becoming sunny, with a high near 56. South wind 9 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 38. West wind 7 to 10 mph.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Partly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 52.
Sunday
A 50 percent chance of rain. Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Alton IL
 38.93°N 90.19°W (Elev. 591 ft)
Last Update:
3:16 am CST Nov 10, 2025
Forecast Valid:
3am CST Nov 10, 2025-6pm CST Nov 16, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation