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

47°F

8°C

Humidity 53%
Wind Speed S 15 mph
Barometer 29.96 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 12 Mar 10:15 pm CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Tonight

    Tonight: Partly 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

    Partly Cloudy
    then 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 13 mph, with gusts as high as 20 mph.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54. South wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 69. Breezy. Chance of precipitation is 90%.

    High: 69 °F

    Breezy.
    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain and snow before 1am, then a chance of snow. Some thunder is also possible. Low around 21. Blustery. Chance of precipitation is 80%.

    Low: 21 °F

    Rain/Snow and
    Blustery

  • Monday

    Monday: A 20 percent chance of snow before 1pm. Partly sunny, with a high near 28. Blustery.

    High: 28 °F

    Slight Chance
    Snow and
    Blustery

  • Monday Night

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

    Low: 13 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly 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 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 54. South wind 10 to 13 mph, with gusts as high as 22 mph.
Sunday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 69. Breezy. Chance of precipitation is 90%.
Sunday Night
Rain and snow before 1am, then a chance of snow. Some thunder is also possible. Low around 21. Blustery. Chance of precipitation is 80%.
Monday
A 20 percent chance of snow before 1pm. Partly sunny, with a high near 28. Blustery.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
10:36 pm CDT Mar 12, 2026
Forecast Valid:
10pm CDT Mar 12, 2026-6pm CDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation