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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

45°F

7°C

Humidity 55%
Wind Speed S 14 mph
Barometer 29.84 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 13 Mar 1:15 am CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 45. Breezy, with a south wind 16 to 20 mph, with gusts as high as 32 mph.

    Low: 45 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Mostly sunny, with a high near 60. West wind 14 to 18 mph, with gusts as high as 28 mph.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 37. Northwest wind around 6 mph becoming calm.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 65. East wind 6 to 14 mph.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain, with thunderstorms also possible after 4pm. High near 70. Breezy. Chance of precipitation is 90%.

    High: 70 °F

    Breezy.
    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then snow likely after 1am. Some thunder is also possible. Low around 22. Blustery. Chance of precipitation is 90%.

    Low: 22 °F

    Rain/Snow and
    Blustery

  • Monday

    Monday: A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 29. Blustery.

    High: 29 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 13. Blustery.

    Low: 13 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 45. Breezy, with a south wind 16 to 20 mph, with gusts as high as 32 mph.
Friday
Mostly sunny, with a high near 60. West wind 14 to 18 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 37. Northwest wind around 6 mph becoming calm.
Saturday
Partly sunny, with a high near 65. East wind 6 to 14 mph.
Saturday Night
Mostly cloudy, with a low around 55. South wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday
Rain, with thunderstorms also possible after 4pm. High near 70. Breezy. Chance of precipitation is 90%.
Sunday Night
Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then snow likely after 1am. Some thunder is also possible. Low around 22. Blustery. Chance of precipitation is 90%.
Monday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 29. Blustery.
Monday Night
Mostly clear, with a low around 13. Blustery.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Sunny, with a high near 70.
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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:
1:25 am CDT Mar 13, 2026
Forecast Valid:
1am CDT Mar 13, 2026-6pm CDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation