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.

Fair

27°F

-3°C

Humidity 59%
Wind Speed NW 16 G 22 mph
Barometer 30.35 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 22 Feb 12:55 am CST
Extended Forecast for

2 Miles WSW Alton IL

  • Overnight

    Overnight: Partly cloudy, with a low around 21. Northwest wind 14 to 16 mph, with gusts as high as 24 mph.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 31. Blustery, with a northwest wind 16 to 22 mph, with gusts as high as 32 mph.

    High: 31 °F

    Mostly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 15. Northwest wind 14 to 17 mph, with gusts as high as 30 mph.

    Low: 15 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 34. Northwest wind 7 to 15 mph, with gusts as high as 25 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 54.

    High: 54 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 21. Northwest wind 14 to 16 mph, with gusts as high as 24 mph.
Sunday
Mostly sunny, with a high near 31. Blustery, with a northwest wind 16 to 22 mph, with gusts as high as 32 mph.
Sunday Night
Partly cloudy, with a low around 15. Northwest wind 14 to 17 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 34. Northwest wind 7 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.
Tuesday
Mostly cloudy, with a high near 54.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 52.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 40.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
12:26 am CST Feb 22, 2026
Forecast Valid:
1am CST Feb 22, 2026-6pm CST Feb 28, 2026
 
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