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

28°F

-2°C

Humidity 64%
Wind Speed SE 8 mph
Barometer 30.29 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 7 Feb 10:35 pm CST
Extended Forecast for

2 Miles WSW Alton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Southeast wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 45. Southeast wind 9 to 13 mph.

    High: 45 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. East wind 5 to 8 mph becoming calm after midnight.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 54. Calm wind becoming south around 6 mph in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Southeast wind around 7 mph becoming west after midnight.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. Southeast wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 45. Southeast wind 9 to 13 mph.
Sunday Night
Partly cloudy, with a low around 28. East wind 5 to 8 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 54. Calm wind becoming south around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 40. Southeast wind around 7 mph becoming west after midnight.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
Mostly cloudy, with a low around 33.
Thursday
A 30 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 47.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 32.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 49.
Friday Night
A chance of rain and snow. Partly cloudy, with a low around 32. Chance of precipitation is 30%.
Saturday
A chance of rain and snow. Partly sunny, with a high near 47. Chance of precipitation is 40%.
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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:
10:06 pm CST Feb 7, 2026
Forecast Valid:
10pm CST Feb 7, 2026-6pm CST Feb 14, 2026
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation